Error when I click the log in to Pavlovia button

This is a tricky one to track down as I can’t replicate the error; what the error essentially means is that, when PsychoPy looks up your username on Pavlovia, the value it gets back doesn’t include a GitLab ID, which it needs to log you in.

This won’t fix the problem, but if you open the file C:\Program Files\PsychoPy\lib\site-packages\psychopy\projects\pavlovia.py in Coder and scroll to line 152, just above you could add this:

            assert 'gitlabId' in self.info, (
                f"Could not retrieve user info, server returned:\n"
                f"{self.info}"
            )

Which will give a more informative error message telling you what actually was received from the server.