I installed PySide6 and PyQt6 by following command:
python -m pip install PySide6
python -m pip install PyQt6
But when I try to run import PySide6.QtCore or import PyQt6.QtCore, then I get this error: ImportError: DLL load failed while importing QtCore: The specified procedure could not be found.
But when I run import PySide2.QtCore or import PyQt5.QtCore, then all works fine.
I tried a lot of tips found on StackOverflow, but nothing helped me.