What is a 501 error code?

The HyperText Transfer Protocol (HTTP) 501 Not Implemented server error response code means that the server does not support the functionality required to fulfill the request. 501 is the appropriate response when the server does not recognize the request method and is incapable of supporting it for any resource.

What is a 502 error?

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.

How do I find error codes?

How to find your error code in Device Manager

1. In Device Manager, double-click the device type that has the problem.
2. Right-click the device that has the problem, and then click Properties. This opens the device’s Properties dialog box. You can see the error code in the Device status area of this dialog box.

What does 501 not implemented mean in Java?

The 501 not implemented error indicates that the server does not support the functionality required to fulfill the request. This is the appropriate response when the server does not recognize the request method and is not capable of supporting it for any resource (RFC7231, section 6.6.2).

Why do I get a 501 error on WordPress?

Unlike some other HTTP status codes where there is a lot of troubleshooting you can do yourself, 501 errors are almost always an issue on the web server. They aren’t usually caused by a bad plugin or caching issue. Therefore, if it doesn’t resolve itself within a few minutes we recommend simply reaching out to your WordPress host.

Why is return code 501 in Maven Central?

Return code is: 501 , ReasonPhrase:HTTPS Required. Maven central is expecting that the clients use https, but the client is making plain HTTP request only. Therefore, the request for downloading the package named ‘wagon-ssh-2.1.pom’ had failed.

What does 501 not implemented mean in IETF?

The Internet Engineering Task Force (IETF) defines the 501 Not Implemented as: The 501 (Not Implemented) status code indicates that the server does not support the functionality required to fulfill the request.