Steven

Hey just a heads up the fix is relatively trivial to implement if you get the time to implement and push upstream please review lines: https://github.com/os/slacker/blob/ec39f344583ce4e415648159b060eb52793b6c97/slacker/__init__.py#L1182-L1183 Set the headers in...

Hey @N-Schaef Mattermost have release a new version: 5.23.1 that fixes this issue. Detail: Modified the mime check, such that we now require Content-Type to be set in the request...