Module not found when running PsychoPy using local repo copy

I’m trying to run psychopy from a local repo that I acquired by forking the GitHub repo and installing it with pip install -e as suggested in the psychopy tutorial Using the repository.

I tried to start psychopy by executing the file, but I get the following error:

ModuleNotFoundError: No module named ''

What do I need to do, to open the GUI?
Why can’t I import I can find the file in the correct folder psychopy\app\.

Thanks for any help. is certainly in the repository. See here: psychopy/ at dev · psychopy/psychopy · GitHub

Looks like your copy lost some files?