Maya 2022 was the first Maya version that moved from Python2 to Python3, and there are ton of minor and major differences between these two Python versions that break code, unless it's been specifically written to be compatible with both (which, in general, most Maya tools written before 2022 were probably not).
There is no easy way to get Python2 code working in Python3 without rewriting it. This could be as simple as making a minor edit to one line, or it could involve a complete refactor due to deprecated types or libraries. There is a ton of info online about doing this and it's potentially very complex and time consuming.
However, you can simply run Maya 2022 in Python2 compatibility mode. This isn't 100% ideal because Python2 has been deprecated for years and I'm not sure Maya 23 or 24 support this going forward, but if you're using 22 anyway, and you just want your old tools working, it's worth at least trying this to see if the issue is, in fact, due to Python2/3 compatibility.
just add the -pythonver 2 flag to your maya shortcut, so on windows, your shortcut would look something like this:
"C:\Program Files\Autodesk\Maya2022\bin\maya.exe" -pythonver 2
