StdExclusions.plist does not Exist in newer MacOS

[HerrDings]

First of all, thank you Brian for that script. It shows that I am not alone with a unreliable TimeMachine Backup.

Nevertheless I cannot make it work since the StdExclusions.plist seems to have vanished during a later MacOS release. (I am using latest Big Sur 11.2.3) When I run the script, it immediately stops with the following Error:

Traceback (most recent call last):
  File "checktimemachine.py", line 560, in <module>
    initialize()
  File "checktimemachine.py", line 549, in initialize
    readStdExclusions()
  File "checktimemachine.py", line 544, in readStdExclusions
    excl = plistlib.readPlist('/System/Library/CoreServices/backupd.bundle/Contents/Resources/StdExclusions.plist')
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plistlib.py", line 75, in readPlist
    pathOrFile = open(pathOrFile)
IOError: [Errno 2] No such file or directory: '/System/Library/CoreServices/backupd.bundle/Contents/Resources/StdExclusions.plist'

I tried to find out where that exclusion file is located now. That was not successful. Maybe someone else has a hint.