{"id":4646,"date":"2026-06-14T17:13:11","date_gmt":"2026-06-14T17:13:11","guid":{"rendered":"https:\/\/www.copahost.com\/blog\/?p=4646"},"modified":"2026-06-14T21:26:30","modified_gmt":"2026-06-14T21:26:30","slug":"504-gateway-timeout-error","status":"publish","type":"post","link":"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/","title":{"rendered":"504 Gateway Timeout Error: The Complete Guide to Causes and Fixes"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>A 504 Gateway Timeout error means that one server, acting as a gateway or proxy, waited too long for a response from another server it depends on \u2014 and gave up.<\/strong> It&#8217;s a server-side timeout: the request reached the infrastructure, but an upstream server didn&#8217;t reply in time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you&#8217;re seeing &#8220;504 Gateway Timeout&#8221; \u2014 whether you&#8217;re a visitor who can&#8217;t reach a site or an owner whose site is down \u2014 this guide covers every cause and every fix, in order. We&#8217;ll start with the quick checks anyone can do, then move to the server-side fixes that resolve the overwhelming majority of cases, because a 504 is usually the website&#8217;s problem to solve, not yours.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/504-Gateway-Timeout-error-displayed-in-a-web-browser-1024x576.png\" alt=\"504 Gateway Timeout error displayed in a web browser\" class=\"wp-image-4647\" srcset=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/504-Gateway-Timeout-error-displayed-in-a-web-browser-1024x576.png 1024w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/504-Gateway-Timeout-error-displayed-in-a-web-browser-300x169.png 300w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/504-Gateway-Timeout-error-displayed-in-a-web-browser-768x432.png 768w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/504-Gateway-Timeout-error-displayed-in-a-web-browser-1536x864.png 1536w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/504-Gateway-Timeout-error-displayed-in-a-web-browser.png 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#What_is_a_504_Gateway_Timeout_error\" title=\"What is a 504 Gateway Timeout error?\">What is a 504 Gateway Timeout error?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Other_names_and_variations_of_this_error\" title=\"Other names and variations of this error\">Other names and variations of this error<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#What_causes_a_504_Gateway_Timeout_error\" title=\"What causes a 504 Gateway Timeout error?\">What causes a 504 Gateway Timeout error?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#How_a_504_differs_from_502_503_and_500\" title=\"How a 504 differs from 502, 503, and 500\">How a 504 differs from 502, 503, and 500<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#How_to_fix_the_504_error_quick_checks_first\" title=\"How to fix the 504 error (quick checks first)\">How to fix the 504 error (quick checks first)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#1_Reload_the_page_and_wait_a_moment\" title=\"1. Reload the page and wait a moment\">1. Reload the page and wait a moment<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#2_Try_a_different_browser_or_device\" title=\"2. Try a different browser or device\">2. Try a different browser or device<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#3_Clear_your_browser_cache_and_flush_your_DNS\" title=\"3. Clear your browser cache and flush your DNS\">3. Clear your browser cache and flush your DNS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#4_Restart_your_network_devices\" title=\"4. Restart your network devices\">4. Restart your network devices<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#5_Check_whether_the_site_is_down_for_everyone\" title=\"5. Check whether the site is down for everyone\">5. Check whether the site is down for everyone<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#How_to_fix_the_504_error_server_side_for_site_owners\" title=\"How to fix the 504 error (server side, for site owners)\">How to fix the 504 error (server side, for site owners)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Check_if_your_server_is_overloaded\" title=\"Check if your server is overloaded\">Check if your server is overloaded<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Increase_the_timeout_values_in_Nginx_or_Apache\" title=\"Increase the timeout values in Nginx or Apache\">Increase the timeout values in Nginx or Apache<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Raise_the_PHP_execution_time\" title=\"Raise the PHP execution time\">Raise the PHP execution time<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Check_for_exhausted_PHP-FPM_or_application_workers\" title=\"Check for exhausted PHP-FPM or application workers\">Check for exhausted PHP-FPM or application workers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Look_for_slow_database_queries_and_heavy_scripts\" title=\"Look for slow database queries and heavy scripts\">Look for slow database queries and heavy scripts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Check_your_CDN_or_proxy_Cloudflare\" title=\"Check your CDN or proxy (Cloudflare)\">Check your CDN or proxy (Cloudflare)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Review_firewall_and_security_rules\" title=\"Review firewall and security rules\">Review firewall and security rules<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Check_the_server_error_logs\" title=\"Check the server error logs\">Check the server error logs<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#How_to_fix_a_504_error_on_WordPress\" title=\"How to fix a 504 error on WordPress\">How to fix a 504 error on WordPress<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#The_business_impact_of_a_504_error\" title=\"The business impact of a 504 error\">The business impact of a 504 error<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#How_to_prevent_504_errors\" title=\"How to prevent 504 errors\">How to prevent 504 errors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.copahost.com\/blog\/504-gateway-timeout-error\/#Frequently_asked_questions_about_the_504_Gateway_Timeout_error\" title=\"Frequently asked questions about the 504 Gateway Timeout error\">Frequently asked questions about the 504 Gateway Timeout error<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_a_504_Gateway_Timeout_error\"><\/span>What is a 504 Gateway Timeout error?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When you load a website, your request often doesn&#8217;t go straight to the server that holds the content. It passes through one or more intermediary servers \u2014 a reverse proxy, a load balancer, or a CDN edge node \u2014 that act as a &#8220;gateway.&#8221; That gateway forwards your request to the upstream server (the one that actually processes it) and waits for a reply.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A 504 Gateway Timeout error occurs when a server, acting as a gateway or proxy, fails to receive a timely response from an upstream server. The gateway did its job and asked, but the upstream server took too long, so the gateway gives up and returns the 504 status code. Represented by HTTP status code 504, this error typically indicates network-related delays or an overloaded upstream server rather than a problem on the visitor&#8217;s side.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The key insight, and the reason this guide is structured the way it is: a 504 is almost always a <strong>server-side<\/strong> problem. Because the issue lives in the server infrastructure, in roughly 70% of cases it&#8217;s the site administrator&#8217;s responsibility to investigate and resolve \u2014 not the visitor&#8217;s.<\/p>\n\n\n\n<!-- ====================================================================\n     Diagram: how a 504 gateway timeout happens \u2014 Copahost\n     Self-contained SVG. Classes prefixed \"g4d-\".\n     ==================================================================== -->\n<div class=\"g4d-diag\">\n  <style>\n    .g4d-diag{--muted:#6b7280;font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;max-width:760px;margin:30px 0;}\n    .g4d-diag svg{width:100%;height:auto;display:block;}\n    .g4d-cap{color:var(--muted);margin-top:10px;text-align:center;}\n  <\/style>\n  <svg viewBox=\"0 0 760 240\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" role=\"img\" aria-label=\"Diagram showing how a 504 gateway timeout happens between the browser, the gateway, and the upstream server\">\n    <defs>\n      <marker id=\"g4dar\" markerWidth=\"9\" markerHeight=\"9\" refX=\"7\" refY=\"3\" orient=\"auto\" markerUnits=\"strokeWidth\"><path d=\"M0,0 L7,3 L0,6 Z\" fill=\"#2563eb\"\/><\/marker>\n      <marker id=\"g4dx\" markerWidth=\"9\" markerHeight=\"9\" refX=\"7\" refY=\"3\" orient=\"auto\" markerUnits=\"strokeWidth\"><path d=\"M0,0 L7,3 L0,6 Z\" fill=\"#d6453d\"\/><\/marker>\n    <\/defs>\n\n    <!-- Browser -->\n    <rect x=\"20\" y=\"80\" width=\"150\" height=\"74\" rx=\"12\" fill=\"#eef2ff\" stroke=\"#2563eb\" stroke-width=\"2\"\/>\n    <text x=\"95\" y=\"112\" text-anchor=\"middle\" font-size=\"14\" font-weight=\"700\" fill=\"#1f2430\">Browser<\/text>\n    <text x=\"95\" y=\"132\" text-anchor=\"middle\" font-size=\"12\" fill=\"#6b7280\">(you)<\/text>\n\n    <!-- Gateway -->\n    <rect x=\"305\" y=\"80\" width=\"150\" height=\"74\" rx=\"12\" fill=\"#f3f4f6\" stroke=\"#9aa3af\" stroke-width=\"2\"\/>\n    <text x=\"380\" y=\"108\" text-anchor=\"middle\" font-size=\"14\" font-weight=\"700\" fill=\"#1f2430\">Gateway<\/text>\n    <text x=\"380\" y=\"127\" text-anchor=\"middle\" font-size=\"11.5\" fill=\"#6b7280\">proxy \/ CDN \/<\/text>\n    <text x=\"380\" y=\"142\" text-anchor=\"middle\" font-size=\"11.5\" fill=\"#6b7280\">load balancer<\/text>\n\n    <!-- Upstream -->\n    <rect x=\"590\" y=\"80\" width=\"150\" height=\"74\" rx=\"12\" fill=\"#fbeceb\" stroke=\"#d6453d\" stroke-width=\"2\"\/>\n    <text x=\"665\" y=\"108\" text-anchor=\"middle\" font-size=\"14\" font-weight=\"700\" fill=\"#1f2430\">Upstream<\/text>\n    <text x=\"665\" y=\"127\" text-anchor=\"middle\" font-size=\"11.5\" fill=\"#6b7280\">app \/ database<\/text>\n    <text x=\"665\" y=\"142\" text-anchor=\"middle\" font-size=\"11.5\" fill=\"#6b7280\">(too slow)<\/text>\n\n    <!-- Browser -> Gateway -->\n    <line x1=\"170\" y1=\"105\" x2=\"303\" y2=\"105\" stroke=\"#2563eb\" stroke-width=\"2.5\" marker-end=\"url(#g4dar)\"\/>\n    <text x=\"236\" y=\"97\" text-anchor=\"middle\" font-size=\"11.5\" fill=\"#2563eb\">request<\/text>\n\n    <!-- Gateway -> Upstream -->\n    <line x1=\"455\" y1=\"105\" x2=\"588\" y2=\"105\" stroke=\"#2563eb\" stroke-width=\"2.5\" marker-end=\"url(#g4dar)\"\/>\n    <text x=\"521\" y=\"97\" text-anchor=\"middle\" font-size=\"11.5\" fill=\"#2563eb\">forwards request<\/text>\n\n    <!-- Upstream -X-> Gateway (no timely reply) -->\n    <line x1=\"588\" y1=\"135\" x2=\"457\" y2=\"135\" stroke=\"#d6453d\" stroke-width=\"2.5\" stroke-dasharray=\"6 5\" marker-end=\"url(#g4dx)\"\/>\n    <text x=\"521\" y=\"152\" text-anchor=\"middle\" font-size=\"11.5\" fill=\"#d6453d\">no reply in time<\/text>\n\n    <!-- Gateway -> Browser : 504 -->\n    <line x1=\"303\" y1=\"135\" x2=\"172\" y2=\"135\" stroke=\"#d6453d\" stroke-width=\"2.5\" marker-end=\"url(#g4dx)\"\/>\n    <text x=\"237\" y=\"152\" text-anchor=\"middle\" font-size=\"11.5\" font-weight=\"700\" fill=\"#d6453d\">504 timeout<\/text>\n\n    <text x=\"380\" y=\"205\" text-anchor=\"middle\" font-size=\"12\" fill=\"#6b7280\">The gateway waited for the upstream server, it didn&#8217;t answer in time, so the gateway returns a 504.<\/text>\n  <\/svg>\n  <p class=\"g4d-cap\">A 504 happens between servers \u2014 the gateway gives up waiting for the upstream.<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Other_names_and_variations_of_this_error\"><\/span>Other names and variations of this error<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The same error appears with different wording depending on the server and CDN. You might see &#8220;504 Gateway Timeout&#8221;, &#8220;HTTP Error 504&#8221;, &#8220;Gateway Timeout Error&#8221;, &#8220;504 Gateway Time-out&#8221; (the Nginx spelling), &#8220;Error 504&#8221;, or \u2014 behind Cloudflare \u2014 &#8220;504 Gateway Time-out&#8221; on a Cloudflare-branded page. WordPress sites may show it inside a maintenance-style page. They all mean the same thing: an upstream server didn&#8217;t respond in time.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Cloudflare-504-Gateway-Time-out-error-page-showing-a-host-error-1024x576.png\" alt=\"Cloudflare 504 Gateway Time-out error page showing a host error\" class=\"wp-image-4648\" srcset=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Cloudflare-504-Gateway-Time-out-error-page-showing-a-host-error-1024x576.png 1024w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Cloudflare-504-Gateway-Time-out-error-page-showing-a-host-error-300x169.png 300w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Cloudflare-504-Gateway-Time-out-error-page-showing-a-host-error-768x432.png 768w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Cloudflare-504-Gateway-Time-out-error-page-showing-a-host-error-1536x864.png 1536w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Cloudflare-504-Gateway-Time-out-error-page-showing-a-host-error.png 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_causes_a_504_Gateway_Timeout_error\"><\/span>What causes a 504 Gateway Timeout error?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Most causes sit on the server side, but a few can be local to the visitor. Here are the main ones, grouped by where they live.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On the <strong>server side<\/strong> (the website&#8217;s infrastructure): an overloaded or under-resourced hosting server, slow database queries or long-running scripts that exceed the timeout, a PHP script timeout (often from a heavy plugin or theme on WordPress), misconfigured timeout values in Nginx or Apache, firewall or security rules blocking communication between servers, and CDN or proxy nodes (like Cloudflare) failing to reach the origin in time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On the <strong>visitor&#8217;s side<\/strong> (less common): a temporary network glitch, a local <a href=\"https:\/\/www.copahost.com\/blog\/what-does-dns-stand-for\/\">DNS<\/a> cache problem, corrupted browser cache, or a misbehaving proxy or VPN.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The table below maps each cause to how you&#8217;d recognize it and where to fix it.<\/p>\n\n\n\n<!-- ====================================================================\n     Diagnostic table: 504 causes vs symptoms \u2014 Copahost\n     Self-contained, color-coded by side. Classes prefixed \"g4t-\".\n     ==================================================================== -->\n<div class=\"g4t-tab\">\n  <style>\n    .g4t-tab{\n      --ink:#1f2430;--muted:#6b7280;--line:#e7e9ee;--soft:#f8f9fb;--you:#2563eb;--site:#d6453d;\n      font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;\n      color:var(--ink);max-width:760px;margin:30px 0;-webkit-font-smoothing:antialiased;\n    }\n    .g4t-tab *{box-sizing:border-box;}\n    .g4t-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.05);}\n    .g4t-row{display:grid;grid-template-columns:1.2fr 0.7fr 1.4fr;border-bottom:1px solid var(--line);}\n    .g4t-row:last-child{border-bottom:none;}\n    .g4t-head{background:var(--soft);}\n    .g4t-head .g4t-cell{font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.03em;}\n    .g4t-cell{padding:14px 16px;line-height:1.45;}\n    .g4t-cause{font-weight:600;}\n    .g4t-badge{display:inline-block;font-weight:700;font-size:12.5px;padding:4px 10px;border-radius:999px;white-space:nowrap;}\n    .g4t-b-site{background:rgba(214,69,61,.12);color:var(--site);}\n    .g4t-b-you{background:rgba(37,99,235,.12);color:var(--you);}\n    .g4t-d{color:#374151;}\n    @media (max-width:600px){\n      .g4t-row{grid-template-columns:1fr;gap:2px;}\n      .g4t-head{display:none;}\n      .g4t-cell{padding:6px 16px;}\n      .g4t-cause{padding-top:14px;}\n      .g4t-cell:last-child{padding-bottom:14px;}\n      .g4t-d::before{content:\"Sign: \";font-weight:600;color:var(--muted);}\n    }\n  <\/style>\n\n  <div class=\"g4t-card\">\n    <div class=\"g4t-row g4t-head\">\n      <div class=\"g4t-cell\">Cause<\/div>\n      <div class=\"g4t-cell\">Where<\/div>\n      <div class=\"g4t-cell\">How to recognize it<\/div>\n    <\/div>\n    <div class=\"g4t-row\">\n      <div class=\"g4t-cell g4t-cause\">Overloaded server<\/div>\n      <div class=\"g4t-cell\"><span class=\"g4t-badge g4t-b-site\">Server<\/span><\/div>\n      <div class=\"g4t-cell g4t-d\">Happens under traffic spikes; CPU\/RAM near limit in your panel<\/div>\n    <\/div>\n    <div class=\"g4t-row\">\n      <div class=\"g4t-cell g4t-cause\">Slow query or long script<\/div>\n      <div class=\"g4t-cell\"><span class=\"g4t-badge g4t-b-site\">Server<\/span><\/div>\n      <div class=\"g4t-cell g4t-d\">Fails on a specific page or action (import, search, checkout)<\/div>\n    <\/div>\n    <div class=\"g4t-row\">\n      <div class=\"g4t-cell g4t-cause\">Short timeout (Nginx\/Apache\/PHP)<\/div>\n      <div class=\"g4t-cell\"><span class=\"g4t-badge g4t-b-site\">Server<\/span><\/div>\n      <div class=\"g4t-cell g4t-d\">Error appears at a consistent time (e.g. exactly 30 or 60s)<\/div>\n    <\/div>\n    <div class=\"g4t-row\">\n      <div class=\"g4t-cell g4t-cause\">Heavy plugin or theme (WordPress)<\/div>\n      <div class=\"g4t-cell\"><span class=\"g4t-badge g4t-b-site\">Server<\/span><\/div>\n      <div class=\"g4t-cell g4t-d\">Started after installing or updating a plugin\/theme<\/div>\n    <\/div>\n    <div class=\"g4t-row\">\n      <div class=\"g4t-cell g4t-cause\">CDN \/ proxy can&#8217;t reach origin<\/div>\n      <div class=\"g4t-cell\"><span class=\"g4t-badge g4t-b-site\">Server<\/span><\/div>\n      <div class=\"g4t-cell g4t-d\">Site uses Cloudflare; error shows a CDN-branded page<\/div>\n    <\/div>\n    <div class=\"g4t-row\">\n      <div class=\"g4t-cell g4t-cause\">Firewall blocking internal requests<\/div>\n      <div class=\"g4t-cell\"><span class=\"g4t-badge g4t-b-site\">Server<\/span><\/div>\n      <div class=\"g4t-cell g4t-d\">Logs show blocked requests between servers<\/div>\n    <\/div>\n    <div class=\"g4t-row\">\n      <div class=\"g4t-cell g4t-cause\">Network glitch \/ local DNS \/ VPN<\/div>\n      <div class=\"g4t-cell\"><span class=\"g4t-badge g4t-b-you\">Your side<\/span><\/div>\n      <div class=\"g4t-cell g4t-d\">Only you are affected; works on another device or network<\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_a_504_differs_from_502_503_and_500\"><\/span>How a 504 differs from 502, 503, and 500<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">These status codes look similar and get confused constantly, but they point to different problems \u2014 and knowing the difference speeds up diagnosis.<\/p>\n\n\n\n<!-- ====================================================================\n     Comparison table: 500 \/ 502 \/ 503 \/ 504 \u2014 Copahost\n     Self-contained. Classes prefixed \"g4c-\".\n     ==================================================================== -->\n<div class=\"g4c-tab\">\n  <style>\n    .g4c-tab{\n      --ink:#1f2430;--muted:#6b7280;--line:#e7e9ee;--soft:#f8f9fb;--accent:#d6453d;\n      font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;\n      color:var(--ink);max-width:760px;margin:30px 0;-webkit-font-smoothing:antialiased;\n    }\n    .g4c-tab *{box-sizing:border-box;}\n    .g4c-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.05);}\n    .g4c-row{display:grid;grid-template-columns:0.7fr 1fr 1.5fr;border-bottom:1px solid var(--line);}\n    .g4c-row:last-child{border-bottom:none;}\n    .g4c-head{background:var(--soft);}\n    .g4c-head .g4c-cell{font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.03em;}\n    .g4c-row.g4c-hl{background:rgba(214,69,61,.05);}\n    .g4c-cell{padding:14px 16px;line-height:1.45;}\n    .g4c-code{font-weight:700;font-family:\"SFMono-Regular\",Consolas,Menlo,monospace;}\n    .g4c-hl .g4c-code{color:var(--accent);}\n    .g4c-name{font-weight:600;}\n    .g4c-d{color:#374151;}\n    @media (max-width:600px){\n      .g4c-row{grid-template-columns:1fr;gap:2px;}\n      .g4c-head{display:none;}\n      .g4c-cell{padding:5px 16px;}\n      .g4c-code{padding-top:14px;}\n      .g4c-cell:last-child{padding-bottom:14px;}\n    }\n  <\/style>\n\n  <div class=\"g4c-card\">\n    <div class=\"g4c-row g4c-head\">\n      <div class=\"g4c-cell\">Code<\/div>\n      <div class=\"g4c-cell\">Name<\/div>\n      <div class=\"g4c-cell\">What it means<\/div>\n    <\/div>\n    <div class=\"g4c-row\">\n      <div class=\"g4c-cell g4c-code\">500<\/div>\n      <div class=\"g4c-cell g4c-name\">Internal Server Error<\/div>\n      <div class=\"g4c-cell g4c-d\">A generic internal failure with no specific category<\/div>\n    <\/div>\n    <div class=\"g4c-row\">\n      <div class=\"g4c-cell g4c-code\">502<\/div>\n      <div class=\"g4c-cell g4c-name\">Bad Gateway<\/div>\n      <div class=\"g4c-cell g4c-d\">The upstream server replied, but with an invalid response<\/div>\n    <\/div>\n    <div class=\"g4c-row\">\n      <div class=\"g4c-cell g4c-code\">503<\/div>\n      <div class=\"g4c-cell g4c-name\">Service Unavailable<\/div>\n      <div class=\"g4c-cell g4c-d\">The server is temporarily down \u2014 overloaded or in maintenance<\/div>\n    <\/div>\n    <div class=\"g4c-row g4c-hl\">\n      <div class=\"g4c-cell g4c-code\">504<\/div>\n      <div class=\"g4c-cell g4c-name\">Gateway Timeout<\/div>\n      <div class=\"g4c-cell g4c-d\">The upstream server didn&#8217;t respond in time \u2014 a timeout between servers<\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">In short: a <strong>504<\/strong> is specifically a <em>timeout<\/em> between servers \u2014 the upstream didn&#8217;t answer in time. A <strong>502<\/strong> means the upstream answered, but with an <em>invalid<\/em> response. A <strong>503<\/strong> means the server is <em>temporarily unavailable<\/em> (overloaded or in maintenance). And a <strong><a href=\"https:\/\/www.copahost.com\/blog\/how-to-fix-500-internal-server-error\/\">500<\/a><\/strong> is a <em>generic internal failure<\/em> with no specific category.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_fix_the_504_error_quick_checks_first\"><\/span>How to fix the 504 error (quick checks first)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Even though a 504 is usually server-side, a few quick checks rule out a temporary or local issue in seconds. Start here.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Reload_the_page_and_wait_a_moment\"><\/span>1. Reload the page and wait a moment<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A 504 is often temporary, caused by a brief spike in traffic or a momentary upstream delay. Refreshing the web page is the simplest first step: it forces the browser to make a fresh request, which can succeed once the upstream server catches up. Wait a minute, then reload (press <code>Ctrl + R<\/code>, or <code>Cmd + R<\/code> on Mac).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Try_a_different_browser_or_device\"><\/span>2. Try a different browser or device<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This rules out issues caused by browser settings, cache, or extensions. Open the site in another browser, an incognito window, or on your phone. If it works elsewhere, the problem may be local to your original browser.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Clear_your_browser_cache_and_flush_your_DNS\"><\/span>3. Clear your browser cache and flush your DNS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A corrupted browser cache or a stale local DNS entry can occasionally cause a 504. Clear your browser&#8217;s cached data, then flush your DNS cache \u2014 on Windows, run <code>ipconfig \/flushdns<\/code> in Command Prompt; on Mac, run <code>sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder<\/code> in Terminal. Then reload the site.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Restart_your_network_devices\"><\/span>4. Restart your network devices<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A simple restart of your router and modem can resolve transient network issues by renewing the connection with your ISP. Power them off, wait about 30 seconds, and turn them back on. Also try disabling any VPN or proxy temporarily, since these can interrupt the connection.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Check_whether_the_site_is_down_for_everyone\"><\/span>5. Check whether the site is down for everyone<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If the steps above don&#8217;t help, confirm whether the problem is just you or everyone. Use a tool like DownDetector or a &#8220;is it down&#8221; checker, or try the site on mobile data. If the site is down for everyone, the cause is on the server \u2014 and if it&#8217;s not your site, all you can do is wait for the owner to fix it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_fix_the_504_error_server_side_for_site_owners\"><\/span>How to fix the 504 error (server side, for site owners)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is where most 504s are actually solved. Work through these in order.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Check_if_your_server_is_overloaded\"><\/span>Check if your server is overloaded<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">An overloaded or under-resourced server is the most common cause. If your traffic spiked, or your plan&#8217;s CPU and memory limits are maxed out, the upstream server can&#8217;t respond in time. Check your hosting resource usage in your control panel. If you&#8217;re consistently near the limit, you likely need to optimize your site or upgrade your plan.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Hosting-control-panel-showing-CPU-usage-near-its-limit-a-common-cause-of-504-errors-1024x576.png\" alt=\"Hosting control panel showing CPU usage near its limit, a common cause of 504 errors\" class=\"wp-image-4649\" srcset=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Hosting-control-panel-showing-CPU-usage-near-its-limit-a-common-cause-of-504-errors-1024x576.png 1024w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Hosting-control-panel-showing-CPU-usage-near-its-limit-a-common-cause-of-504-errors-300x169.png 300w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Hosting-control-panel-showing-CPU-usage-near-its-limit-a-common-cause-of-504-errors-768x432.png 768w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Hosting-control-panel-showing-CPU-usage-near-its-limit-a-common-cause-of-504-errors-1536x864.png 1536w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Hosting-control-panel-showing-CPU-usage-near-its-limit-a-common-cause-of-504-errors.png 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Increase_the_timeout_values_in_Nginx_or_Apache\"><\/span>Increase the timeout values in Nginx or Apache<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If a legitimate request simply takes longer than the configured limit, raising the timeout fixes it. Incorrect or too-short timeout settings in your web server are a frequent trigger. On <strong>Nginx<\/strong>, increase <code>proxy_read_timeout<\/code>, <code>proxy_connect_timeout<\/code>, and <code>fastcgi_read_timeout<\/code>. On <strong>Apache<\/strong>, raise the <code>Timeout<\/code> directive and, if using PHP-FPM, the <code>ProxyTimeout<\/code>. After editing, restart the web server.<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\"><span class=\"hljs-comment\"># Nginx example (in the server or location block)<\/span>\nproxy_connect_timeout <span class=\"hljs-number\">300<\/span>;\nproxy_read_timeout <span class=\"hljs-number\">300<\/span>;\nfastcgi_read_timeout <span class=\"hljs-number\">300<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<!-- ====================================================================\n     Expert-insight callout \u2014 \"raising the timeout is usually wrong\"\n     Self-contained. Classes prefixed \"g4i-\".\n     ==================================================================== -->\n<div class=\"g4i-note\">\n  <style>\n    .g4i-note{\n      --bg:#eef4ff;--border:#bcd2f5;--bar:#2563eb;--ink:#1e3a5f;--icon:#2563eb;\n      font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;\n      max-width:760px;margin:28px 0;display:flex;gap:14px;\n      background:var(--bg);border:1px solid var(--border);border-left:5px solid var(--bar);\n      border-radius:12px;padding:18px 20px;color:var(--ink);line-height:1.6;\n      -webkit-font-smoothing:antialiased;\n    }\n    .g4i-note *{box-sizing:border-box;}\n    .g4i-ico{flex:0 0 auto;width:24px;height:24px;color:var(--icon);margin-top:1px;}\n    .g4i-body{margin:0;}\n    .g4i-body strong{color:#13294a;}\n  <\/style>\n  <svg class=\"g4i-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\">\n    <path d=\"M9 18h6M10 22h4M12 2a7 7 0 0 0-4 12.7c.6.5 1 1.3 1 2.1h6c0-.8.4-1.6 1-2.1A7 7 0 0 0 12 2z\"\/>\n  <\/svg>\n  <p class=\"g4i-body\"><strong>Expert tip: raising the timeout is usually the wrong fix.<\/strong> A higher timeout treats the symptom, not the cause \u2014 it just makes the gateway wait longer for a response that&#8217;s still too slow. Nine times out of ten, the real problem is <em>why<\/em> the upstream is slow: a heavy database query, an N+1 query pattern, an external API that hangs, or a long-running task that should be a background job. Raise the timeout only to buy breathing room while you investigate; the lasting fix is making the upstream respond faster. If a normal page needs a 300-second timeout, that&#8217;s a signal to optimize the code or query \u2014 not to wait longer.<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Raise_the_PHP_execution_time\"><\/span>Raise the PHP execution time<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Long-running PHP scripts that exceed <code>max_execution_time<\/code> are a classic 504 cause, especially during imports, backups, or heavy queries. Increase <code>max_execution_time<\/code> in your <code>php.ini<\/code> (for example, to 300 seconds), or through your hosting panel&#8217;s PHP settings.<\/p>\n\n\n<pre class=\"wp-block-code\"><span><code class=\"hljs\">max_execution_time = 300<\/code><\/span><\/pre>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Check_for_exhausted_PHP-FPM_or_application_workers\"><\/span>Check for exhausted PHP-FPM or application workers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Modern setups don&#8217;t process requests with unlimited capacity \u2014 they use a fixed pool of &#8220;workers.&#8221; If every worker is busy, new requests have to wait in a queue, and if they wait longer than the gateway&#8217;s timeout, the result is a 504. This is a common cause on busy sites and is easy to miss, because each individual request might be fast \u2014 there simply aren&#8217;t enough workers to go around.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On <strong>PHP<\/strong> sites running PHP-FPM, the limit is set by <code><strong>pm.max_children<\/strong><\/code> in your PHP-FPM pool configuration. If your error log shows messages like &#8220;server reached pm.max_children&#8221;, that&#8217;s your culprit: raise the value (carefully \u2014 each worker consumes memory, so don&#8217;t set it higher than your RAM allows), or reduce how long each request holds a worker by fixing slow operations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">On <strong>Node.js<\/strong> applications, the equivalent is a process that&#8217;s blocked or a worker pool that&#8217;s saturated \u2014 a single long synchronous operation can stall the event loop and make every request behind it time out. Run multiple instances (for example, with a process manager like PM2 in cluster mode) and move heavy work off the main thread.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In both cases, the principle is the same as with timeouts: more workers buys capacity, but if requests are slow because of the code or the database, the real fix is upstream \u2014 make each request finish faster so workers free up sooner.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Look_for_slow_database_queries_and_heavy_scripts\"><\/span>Look for slow database queries and heavy scripts<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Faulty scripts, poor API integrations, or database queries that run too slowly delay the upstream response until the gateway times out. Review your slowest queries (many panels offer a slow-query log), optimize or index them, and audit any external API calls that might hang. On a database that&#8217;s corrupted, repair it through your panel or with a repair tool.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Check_your_CDN_or_proxy_Cloudflare\"><\/span>Check your CDN or proxy (Cloudflare)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">If your site sits behind a CDN, a misconfigured or overloaded CDN node can fail to pass the request to your origin server in time, producing a 504 at the edge. On Cloudflare specifically, a 504 usually means the origin didn&#8217;t respond within Cloudflare&#8217;s timeout. Check that your origin is healthy and reachable, and review the CDN&#8217;s timeout settings. Temporarily pausing the CDN can confirm whether it&#8217;s the source.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Review_firewall_and_security_rules\"><\/span>Review firewall and security rules<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Firewalls can sometimes block legitimate requests between servers, causing a 504. To test, temporarily review (not permanently disable) your firewall or security plugin rules and check the logs for blocked internal requests. If a rule is the cause, adjust it rather than turning protection off.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Check_the_server_error_logs\"><\/span>Check the server error logs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When the cause isn&#8217;t obvious, the logs usually reveal it. In your hosting panel, open the error log (on many servers, PHP errors are stored in a <code>php_errorlog<\/code> or <code>error_log<\/code> file in your site&#8217;s root folder). The entries logged at the time of the 504 often point straight to the slow script, query, or upstream failure responsible.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Server-error-log-showing-a-PHP-maximum-execution-time-error-behind-a-504-1024x576.png\" alt=\"Server error log showing a PHP maximum execution time error behind a 504\" class=\"wp-image-4650\" srcset=\"https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Server-error-log-showing-a-PHP-maximum-execution-time-error-behind-a-504-1024x576.png 1024w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Server-error-log-showing-a-PHP-maximum-execution-time-error-behind-a-504-300x169.png 300w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Server-error-log-showing-a-PHP-maximum-execution-time-error-behind-a-504-768x432.png 768w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Server-error-log-showing-a-PHP-maximum-execution-time-error-behind-a-504-1536x864.png 1536w, https:\/\/www.copahost.com\/blog\/wp-content\/uploads\/2026\/06\/Server-error-log-showing-a-PHP-maximum-execution-time-error-behind-a-504.png 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_fix_a_504_error_on_WordPress\"><\/span>How to fix a 504 error on WordPress<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress sites have a few extra, common culprits worth checking directly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A heavy or poorly coded <strong>plugin<\/strong> is the most frequent WordPress trigger. Deactivate all plugins \u2014 if you can&#8217;t reach the dashboard, rename the <code>wp-content\/plugins<\/code> folder via <a href=\"https:\/\/www.copahost.com\/blog\/ftp-meaning\/\">FTP<\/a> to deactivate them all at once \u2014 then reload. If the 504 clears, reactivate them one by one to find the offender. If plugins aren&#8217;t the cause, switch to a default <strong>theme<\/strong> (rename the active theme&#8217;s folder via FTP, or change it through the database with phpMyAdmin if the dashboard is locked). Finally, enable WordPress debug mode (<code>WP_DEBUG_LOG<\/code>) so errors are recorded to a log you can inspect for the real cause.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"The_business_impact_of_a_504_error\"><\/span>The business impact of a 504 error<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A 504 isn&#8217;t just a technical nuisance. When a visitor tries to reach your site and hits a 504, it creates frustration and damages trust \u2014 and for a site owner, it can mean lost traffic, lost customers, and a direct hit to revenue. Worse, this status code may negatively affect your SEO: if search engine crawlers repeatedly encounter 504s, they can&#8217;t index your pages and may crawl your site less often. That&#8217;s why a recurring 504 should be treated as a priority, not ignored as an occasional blip.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_prevent_504_errors\"><\/span>How to prevent 504 errors<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Prevention is far cheaper than firefighting. Keep your site optimized so requests resolve quickly: cache aggressively, optimize images, and clean up slow database queries. Audit plugins and scripts, removing anything heavy or unmaintained. Set sensible timeout values that match your legitimate workloads. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you use a CDN, configure its timeouts to match your origin. And most importantly, choose hosting with enough resources and headroom for your traffic \u2014 many 504s trace back to overcrowded, under-resourced servers that buckle under normal load.<\/p>\n\n\n\n\n<div class=\"g4c-cta\">\n  <style>\n    .g4c-cta{\n      --accent:#d6453d;\n      font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;\n      max-width:760px;margin:36px 0;border-radius:16px;padding:32px 28px;\n      background:linear-gradient(135deg,#2a1110 0%,#15171e 100%);color:#fff;\n      position:relative;overflow:hidden;-webkit-font-smoothing:antialiased;\n    }\n    .g4c-cta *{box-sizing:border-box;}\n    .g4c-cta::after{content:\"\";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(214,69,61,.30),transparent 70%);}\n    .g4c-cta-tag{display:inline-block;letter-spacing:.06em;text-transform:uppercase;font-weight:700;font-size:13px;color:#f0a59f;margin-bottom:12px;position:relative;}\n    .g4c-cta-title{font-weight:800;font-size:22px;line-height:1.2;margin:0 0 10px;position:relative;}\n    .g4c-cta-text{font-size:15.5px;line-height:1.55;margin:0 0 22px;color:#cdd1da;max-width:560px;position:relative;}\n    .g4c-cta-btn,\n    .g4c-cta-btn:link,\n    .g4c-cta-btn:visited,\n    .g4c-cta-btn:hover,\n    .g4c-cta-btn:active{\n      display:inline-block;text-decoration:none;\n      background:var(--accent);color:#ffffff !important;font-weight:700;font-size:15.5px;\n      padding:14px 28px;border-radius:999px;position:relative;\n      transition:transform .15s ease,box-shadow .15s ease;\n      box-shadow:0 8px 20px rgba(214,69,61,.35);\n    }\n    .g4c-cta-btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(214,69,61,.45);}\n  <\/style>\n\n  <span class=\"g4c-cta-tag\">Hosting built for speed<\/span>\n  <p class=\"g4c-cta-title\">Tired of timeouts slowing your site down?<\/p>\n  <p class=\"g4c-cta-text\">Most 504 errors come from overloaded, under-resourced servers that can&#8217;t respond in time. Copahost hosting gives your site the resources, optimized configuration, and headroom it needs to keep responses fast \u2014 so your visitors never hit a gateway timeout.<\/p>\n  <a class=\"g4c-cta-btn\" href=\"https:\/\/www.copahost.com\/\" rel=\"noopener\">See Copahost hosting plans<\/a>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A 504 Gateway Timeout error looks alarming, but it tells you something specific: a server waited too long for another server and gave up. For visitors, the quick checks \u2014 reload, try another browser, flush DNS, restart the router \u2014 rule out the rare local cause in minutes. For site owners, where the fix almost always lives, the path is methodical: check server load, raise the timeout and PHP limits, hunt down slow queries and heavy plugins, and review your CDN and firewall.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because a 504 is overwhelmingly a server-side problem, the most reliable long-term fix is infrastructure: fast, well-resourced hosting with sensible timeouts and a healthy origin keeps upstream responses quick \u2014 and keeps your visitors from ever seeing a gateway timeout.<\/p>\n\n\n\n<!-- ====================================================================\n     FAQ \u2014 504 Gateway Timeout (Copahost) \u2014 HTML + FAQPage schema\n     Self-contained block. Classes prefixed \"g4q-\".\n\n     IMPORTANT:\n     - The JSON-LD text is IDENTICAL to the visible text. If you edit a\n       question\/answer, edit it in BOTH places (schema and HTML).\n     - Use only ONE FAQPage block per page. If your SEO plugin already\n       outputs FAQ schema, remove this JSON-LD to avoid duplication.\n     ==================================================================== -->\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does a 504 Gateway Timeout error mean?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"It means one server, acting as a gateway or proxy (like Nginx, a load balancer, or a CDN), waited too long for a response from another server it depends on, called the upstream server, and gave up. The request reached the infrastructure, but the upstream didn't reply in time, so the gateway returns the 504 status code.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is a 504 error my fault or the website's?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Almost always the website's. A 504 is a server-side error, and in roughly 70% of cases it's the site administrator's responsibility to fix. If the site is down for everyone, the cause is the server. The error is rarely on the visitor's side, though a temporary network glitch, a VPN, or a local DNS issue can occasionally cause it \u2014 which you can rule out by trying another device or network.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How long does a 504 Gateway Timeout last?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"It depends on the cause. A 504 from a brief traffic spike or a momentary upstream delay can clear in seconds once you reload. But a 504 caused by an overloaded server, a slow query, or a misconfiguration will persist until someone fixes the underlying problem. If a site is consistently returning 504s, it won't resolve on its own.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I fix a 504 error as a visitor?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Try the quick checks: reload the page after waiting a moment, open the site in a different browser or an incognito window, clear your browser cache and flush your DNS, and restart your router. Disabling a VPN or proxy can also help. If the site still fails on other devices and networks, the problem is on the server and only the owner can fix it.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I fix a 504 error on my own website?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Work through the server-side causes: check whether your server is overloaded (CPU and memory), increase the timeout values in Nginx or Apache and the PHP max_execution_time, find and optimize slow database queries or heavy scripts, review your CDN and firewall settings, and check the server error logs for the exact cause. On WordPress, also test by deactivating plugins and switching to a default theme.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does a 504 error mean in Nginx?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"In Nginx, a 504 means Nginx, acting as a reverse proxy, waited longer than its configured timeout for a response from the upstream server (such as PHP-FPM or an application server). The relevant setting is proxy_read_timeout (and fastcgi_read_timeout for PHP), whose default is 60 seconds. Raising it can help, but the better fix is usually finding why the upstream is slow.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What causes a 504 error on Cloudflare?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Behind Cloudflare, a 504 almost always means Cloudflare's edge couldn't get a response from your origin server within its timeout. The origin is too slow, overloaded, or unreachable. Check that your origin server is healthy and responding quickly, review its timeout settings, and confirm a firewall isn't blocking Cloudflare. Temporarily pausing Cloudflare confirms whether the edge or the origin is at fault.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What's the difference between a 502 and a 504 error?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Both involve a gateway and a failing upstream server, which is why they're easy to confuse. A 502 Bad Gateway means the upstream replied, but with an invalid response or by refusing the connection. A 504 Gateway Timeout means the upstream stayed silent too long \u2014 it didn't reply at all within the time limit. In short: 502 is a bad answer, 504 is no answer in time.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What's the difference between a 503 and a 504 error?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 503 Service Unavailable means the server explicitly says it can't handle the request right now, usually due to overload or maintenance, and it's often intentional and temporary. A 504 Gateway Timeout means a gateway waited for an upstream server that never responded in time. A 503 is the server saying 'not now'; a 504 is the gateway giving up after silence.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why do I get a 504 error on WordPress?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"On WordPress, the most common cause is a heavy or poorly coded plugin, or a theme, that makes a request take longer than the server's timeout. Slow database queries and an under-resourced server are also frequent. To diagnose, deactivate all plugins (rename the plugins folder via FTP if you can't log in), switch to a default theme, and enable WP_DEBUG_LOG to capture the exact error.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why does a 504 happen only on one page or action?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"When the 504 appears only on a specific page or action \u2014 a search, a checkout, an import, or an API call \u2014 it usually points to a single slow operation: a heavy database query, an external API that hangs, or a long-running script that exceeds the timeout. The fix is to optimize that specific operation, or move long tasks to a background job, rather than raising timeouts globally.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does a 504 error affect SEO?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A rare, brief 504 won't hurt your rankings. But if search engine crawlers repeatedly hit 504s, they can't access your pages, which can harm indexing and rankings over time, and crawlers may visit less often. Because a 504 also frustrates visitors and can cost sales, a recurring one should be fixed promptly rather than ignored.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n<div class=\"g4q-faq\">\n  <style>\n    .g4q-faq{\n      --ink:#1f2430;--muted:#6b7280;--line:#e7e9ee;--soft:#f7f8fa;--accent:#d6453d;\n      font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif;\n      color:var(--ink);max-width:760px;margin:32px 0;-webkit-font-smoothing:antialiased;\n    }\n    .g4q-faq *{box-sizing:border-box;}\n    .g4q-faq h2{font-weight:700;margin:0 0 18px;line-height:1.2;}\n    .g4q-item{border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff;overflow:hidden;transition:box-shadow .2s ease;}\n    .g4q-item[open]{box-shadow:0 4px 16px rgba(16,24,40,.06);border-color:#e3b3af;}\n    .g4q-item summary{list-style:none;cursor:pointer;padding:16px 18px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:14px;transition:background .15s ease;}\n    .g4q-item summary:hover{background:var(--soft);}\n    .g4q-item summary::-webkit-details-marker{display:none;}\n    .g4q-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;border-radius:12px;}\n    .g4q-ico{flex:0 0 auto;width:20px;height:20px;color:var(--accent);transition:transform .25s ease;}\n    .g4q-item[open] .g4q-ico{transform:rotate(45deg);}\n    .g4q-answer{padding:0 18px 18px;line-height:1.6;color:#374151;}\n    .g4q-answer p{margin:0;}\n    .g4q-answer code{background:#f1f3f5;padding:1px 6px;border-radius:5px;font-family:\"SFMono-Regular\",Consolas,Menlo,monospace;font-size:.9em;}\n  <\/style>\n\n  <h2><span class=\"ez-toc-section\" id=\"Frequently_asked_questions_about_the_504_Gateway_Timeout_error\"><\/span>Frequently asked questions about the 504 Gateway Timeout error<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <details class=\"g4q-item\">\n    <summary>What does a 504 Gateway Timeout error mean?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>It means one server, acting as a gateway or proxy (like Nginx, a load balancer, or a CDN), waited too long for a response from another server it depends on, called the upstream server, and gave up. The request reached the infrastructure, but the upstream didn&#8217;t reply in time, so the gateway returns the 504 status code.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>Is a 504 error my fault or the website&#8217;s?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>Almost always the website&#8217;s. A 504 is a server-side error, and in roughly 70% of cases it&#8217;s the site administrator&#8217;s responsibility to fix. If the site is down for everyone, the cause is the server. The error is rarely on the visitor&#8217;s side, though a temporary network glitch, a VPN, or a local DNS issue can occasionally cause it \u2014 which you can rule out by trying another device or network.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>How long does a 504 Gateway Timeout last?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>It depends on the cause. A 504 from a brief traffic spike or a momentary upstream delay can clear in seconds once you reload. But a 504 caused by an overloaded server, a slow query, or a misconfiguration will persist until someone fixes the underlying problem. If a site is consistently returning 504s, it won&#8217;t resolve on its own.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>How do I fix a 504 error as a visitor?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>Try the quick checks: reload the page after waiting a moment, open the site in a different browser or an incognito window, clear your browser cache and flush your DNS, and restart your router. Disabling a VPN or proxy can also help. If the site still fails on other devices and networks, the problem is on the server and only the owner can fix it.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>How do I fix a 504 error on my own website?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>Work through the server-side causes: check whether your server is overloaded (CPU and memory), increase the timeout values in Nginx or Apache and the PHP <code>max_execution_time<\/code>, find and optimize slow database queries or heavy scripts, review your CDN and firewall settings, and check the server error logs for the exact cause. On WordPress, also test by deactivating plugins and switching to a default theme.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>What does a 504 error mean in Nginx?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>In Nginx, a 504 means Nginx, acting as a reverse proxy, waited longer than its configured timeout for a response from the upstream server (such as PHP-FPM or an application server). The relevant setting is <code>proxy_read_timeout<\/code> (and <code>fastcgi_read_timeout<\/code> for PHP), whose default is 60 seconds. Raising it can help, but the better fix is usually finding why the upstream is slow.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>What causes a 504 error on Cloudflare?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>Behind Cloudflare, a 504 almost always means Cloudflare&#8217;s edge couldn&#8217;t get a response from your origin server within its timeout. The origin is too slow, overloaded, or unreachable. Check that your origin server is healthy and responding quickly, review its timeout settings, and confirm a firewall isn&#8217;t blocking Cloudflare. Temporarily pausing Cloudflare confirms whether the edge or the origin is at fault.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>What&#8217;s the difference between a 502 and a 504 error?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>Both involve a gateway and a failing upstream server, which is why they&#8217;re easy to confuse. A 502 Bad Gateway means the upstream replied, but with an invalid response or by refusing the connection. A 504 Gateway Timeout means the upstream stayed silent too long \u2014 it didn&#8217;t reply at all within the time limit. In short: 502 is a bad answer, 504 is no answer in time.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>What&#8217;s the difference between a 503 and a 504 error?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>A 503 Service Unavailable means the server explicitly says it can&#8217;t handle the request right now, usually due to overload or maintenance, and it&#8217;s often intentional and temporary. A 504 Gateway Timeout means a gateway waited for an upstream server that never responded in time. A 503 is the server saying &#8220;not now&#8221;; a 504 is the gateway giving up after silence.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>Why do I get a 504 error on WordPress?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>On WordPress, the most common cause is a heavy or poorly coded plugin, or a theme, that makes a request take longer than the server&#8217;s timeout. Slow database queries and an under-resourced server are also frequent. To diagnose, deactivate all plugins (rename the plugins folder via FTP if you can&#8217;t log in), switch to a default theme, and enable <code>WP_DEBUG_LOG<\/code> to capture the exact error.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>Why does a 504 happen only on one page or action?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>When the 504 appears only on a specific page or action \u2014 a search, a checkout, an import, or an API call \u2014 it usually points to a single slow operation: a heavy database query, an external API that hangs, or a long-running script that exceeds the timeout. The fix is to optimize that specific operation, or move long tasks to a background job, rather than raising timeouts globally.<\/p><\/div>\n  <\/details>\n\n  <details class=\"g4q-item\">\n    <summary>Does a 504 error affect SEO?\n      <svg class=\"g4q-ico\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\"><path d=\"M12 5v14M5 12h14\"\/><\/svg>\n    <\/summary>\n    <div class=\"g4q-answer\"><p>A rare, brief 504 won&#8217;t hurt your rankings. But if search engine crawlers repeatedly hit 504s, they can&#8217;t access your pages, which can harm indexing and rankings over time, and crawlers may visit less often. Because a 504 also frustrates visitors and can cost sales, a recurring one should be fixed promptly rather than ignored.<\/p><\/div>\n  <\/details>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A 504 Gateway Timeout error means that one server, acting as a gateway or proxy, waited too long for a response from another server it depends on \u2014 and gave up. It&#8217;s a server-side timeout: the request reached the infrastructure, but an upstream server didn&#8217;t reply in time. If you&#8217;re seeing &#8220;504 Gateway Timeout&#8221; \u2014 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4651,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[177],"tags":[],"class_list":["post-4646","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web-server"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>504 Gateway Timeout Error: The Complete Guide to Causes and Fixes<\/title>\n<meta name=\"description\" content=\"504 Gateway Timeout error? 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