What does error 405 mean?

Error 405 Method Not Allowed means that the server understood the request method (e.g., GET, POST), but the resource to which the request was sent does not support this method.

For example, if you try to send a POST request to a URL that only expects GET requests, the server will return a 405 error.

The server should include an Allow header in the response, listing the permitted methods for the requested resource. For example:

Allow: GET, HEAD