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5xx Server Error
510
Not Extended
Further extensions to the request are required for the server to fulfill it.
What it means
A 510 Not Extended response indicates the server requires further extensions to the request to fulfill it. This status code is rarely used in practice.
Common causes
- The server requires HTTP extensions that were not included in the request.
How to fix it
- Add the required extensions to the request as specified in the response.
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