501
Not Implemented
5xx · Server Error
The server does not support the functionality required.
What does HTTP 501 Not Implemented mean?
The server does not support the functionality required to fulfil the request — for example, an unrecognized request method. It implies the capability may be added in the future.
5xx responses indicate the server failed to fulfil a valid request. The problem is on the server side and is not something the client can fix by changing the request.
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