The HyperText Transfer Protocol (HTTP) 504 Gateway Timeout server error response code indicates that the server, while acting as a gateway or proxy, cannot get a response in time.
Note: A Gateway might refer to different things in networking and a 504 error is usually not something you can fix, but requires a fix by the web server or the proxies you are trying to get access through.
504 Gateway Timeout
| Specification | Title |
|---|---|
| RFC 7231, section 6.6.4: 504 Gateway Timeout | Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content |
The information shown below has been pulled from MDN's GitHub (https://github.com/mdn/browser-compat-data).
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | Yes | Yes | Yes | Yes |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/504