Not Evaluated Description
Whenever the shiboken2 and PySide2 versions don't exactly match you get a DLL Load Error (on windows at least). The error is not descriptive of the actual problem and whenever this happens it would be nice if the error message were to hint at shiboken2 and PySide2 mismatching, preferably listing their reported version numbers in the message.
An easy way to accidentally get this issue is to run "pip install PySide2==5.12.0". Which right now will install PySide2 5.12.0 and shiboken2 5.12.1, resulting in the above-mentioned error.