What causes an HTTP 501 error and how do I fix it? or Getting an HTTP 501 - Not Implemented error. An

501 means the server doesn’t support the method you’re using. Could be:
- Server misconfigured
- Endpoint doesn’t exist
- API version mismatch

Try hitting the same endpoint with a different tool (like Insomnia) to rule out client issues. If it still fails, def a server prob.