Thanks for the reply. You’re right that it’s the server response. In urequests, HTTP/1.0 is hard coded which is why the server returns that error. The API calls haven’t changed, I can make the same requests without issue via other REST clients or using the standard Python requests module. The issue is with the way only HTTP/1.0 is supported.
What I’m trying to understand is if there is a way to make a request using HTTP/1.1 or above so I can avoid this? I’ve tried just changing it to 1.1 in the urequests module but sadly it doesn’t appear to be that simple!