So I had to delete some directories and move data to a different location before traveling this weekend. I saved my .ipynb, git commit to GitHub, and left for the weekend. I was able to pull it down with zero issues to my laptop and work on it. PyCharm professional edition 2021.2.2 PY-212.5284.44
Now I get back home, git clone the .ipynb from GitHub to a newly created folder and I get the error. Why doesn't the file belong to the project and why is this such a worthless error message. Why can't they create a link within the error message that links to possible solutions or some kind of "reload, redo or fix this thing"
Nope, what I get is "This file does not belong" no recommendations, no hints, or no help.
So I google the error and find "File > Invalidate Caches" is a recommendation, which I do and restart to no change.
I'm starting to feel like PyCharm is an episode of Seinfield "Software is only helpful if it works, so when it doesn't work it's intelligently designed to give you clues"
What we need is "Hello human you broke my Blah Blah function, go to preferences and load project file ABC.file" Software needs to give you an error that tells you something, anything remotely helpful on how to fix it.
You could also think ahead and solve part of the problem via "Hello human you broke my Blah Blah function, click here to post an error post to my genius creators and include screenshot of my Fizz Buzz settings in File>Settings>FizzBuzz"