We recently updated the API endpoint for Create File Resource to make the validation of the parameters stricter. In doing so, we discovered a misuse in our code examples (Python Example, Manually Uploading a File).
If your Create File Resource stops working, please modify the Create File Resource API endpoint call to insert the parameter federationToken=1 into the body of the API call.
If you need any more information, please visit our documentation.
We apologize for any inconvenience.