What does it mean when it says 502 bad gateway?

What does it mean when it says 502 bad gateway?

The HyperText Transfer Protocol (HTTP) 502 Bad Gateway server error response code indicates that the server, while acting as a gateway or proxy, received an invalid response from the upstream server.

What is a 500 response code?

The HyperText Transfer Protocol (HTTP) 500 Internal Server Error server error response code indicates that the server encountered an unexpected condition that prevented it from fulfilling the request. Usually, this indicates the server cannot find a better 5xx error code to response.

How do I fix my 504?

How to Fix the 504 Gateway Timeout Error

1. Retry the web page by selecting the refresh/reload button, pressing F5, or trying the URL from the address bar again.
2. Restart all of your network devices.
3. Check the proxy server settings in your browser or application and make sure they’re correct.

What causes a 504 error?

A 504 Gateway Timeout error indicates that the web server is waiting too long to respond from another server and “timing out.” There can be many reasons for this timeout: the other server is not functioning properly, overloaded, or down. The other server need not always be external (e.g. CDN, API gateway).

What is a 505 error?

The HyperText Transfer Protocol (HTTP) error 505 : HTTP Version Not Supported response status code indicates that the HTTP version used in the request is not supported by the server.

What does code 200 mean?

Successful. 200 – OK. The 200 status code is by far the most common returned. It means, simply, that the request was received and understood and is being processed.

What kind of error 503 is?

The HyperText Transfer Protocol (HTTP) 503 Service Unavailable server error response code indicates that the server is not ready to handle the request. Common causes are a server that is down for maintenance or that is overloaded.