Pycharm interpreter nothing to show

I have a project for which I set up a pipenv environment with Python 3.7. It worked fine until I cloned from master in VCS. I have done this many times before for the same project, but my last clone messed something up:

• All my project files seem to be out of the project:

  The yellow background on my project files show that they are considered external to the project. (Had to black out some words because of company rules).

  

• My build/debug configurations show nonsense (there's a configuration for each file, things that I have never done).

• The Python interpreter in the options says "Nothing to show":

  As you can see, my Python interpreter does not display, and I cannot add one either.

  

I tried opening another project which uses venv, and it worked perfectly fine.

From what I found, some other people have had this problem but I never found any fix, except someone who said the bug disappeared when rebooting. I tried but it didn't work.

My theory is that after cloning, my files are now out of the current project. This is why pipenv wouldn't work, and I couldn't add a Python interpreter.

The behavior is under investigation now, please follow https://youtrack.jetbrains.com/issue/PY-48492

A workaround is to delete .idea folder in the project and reopen it in PyCharm.