python modules can't be imported since update to 10.1

Hi

I have a couple of python plugins that stopped working after the recent Painter update to 10.1 . One part was caused by the switch from PySide2 to PySide6. This was easy to fix thanks to the proper documentation in the release notes. 

My other issue is, that the pillow (PIL) modules can't be loaded anymore. They were installed with pip on my PC (no virtual environment). No Problem with Painter 10.0 whatsoever. But Painter 10.1 can't load it anymore. I can revert to Painter 10.0 and immediately all plugins work again.

The script already fails at the "from PIL import Image" line: [Python] ModuleNotFoundError: No module named 'PIL'

What could be the cause? (maybe the switch to python 3.11). Is there any solution to this?