Installing CodeWeavers' crossover 20.0.4 fails on Linux

I'm using Gentoo Linux and have Python 3.10 and 3.11 installed. I have a registered version of Crossover 20.0.4 that I'm trying to install using the `.bin` installer and I hit this error and installation fails:

Traceback (most recent call last):
  File "/home/dev/Software/cxoffice/lib/python/cxconfig.py", line 12, in 
    from collections import MutableMapping
ImportError: cannot import name 'MutableMapping' from 'collections' (/usr/lib/python3.11/collections/__init__.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/dev/Software/cxoffice/bin/cxtie", line 135, in 
    import cxtiemain
  File "/home/dev/Software/cxoffice/lib/python/cxtiemain.py", line 6, in 
    import c4parser
  File "/home/dev/Software/cxoffice/lib/python/c4parser.py", line 10, in 
    import cxproduct
  File "/home/dev/Software/cxoffice/lib/python/cxproduct.py", line 7, in 
    import cxconfig
  File "/home/dev/Software/cxoffice/lib/python/cxconfig.py", line 15, in 
    from UserDict import DictMixin as MutableMapping
ModuleNotFoundError: No module named 'UserDict'

I'm not the only one who seems to have had this issue: There's this thread: https://www.codeweavers.com/support/forums/general/?ft=25;t=26;msg=267771 and this Ask Ubuntu question: https://askubuntu.com/questions/1437185/cant-install-packages-after-trying-to-install-deb-file How do I get it to install or do I have to upgrade?