Hi there!
I’m nut sure if this is a Plasma or Wireplumber related issue.
The one crashing is wireplumber and i’ve filed a bug report here: Making sure you're not a bot!
But I’m not sure why plasmalogin is running wireplumber before I even login into the system. Is that normal?
In case it helps. If I disable plasmalogin service, and login with a tty, I can check that wireplumber service is loaded and running and no crashes. If I enter Plasma and restart as my user wireplumber, also no crashes. It’s only when the wireplumber process is called from the plasmalogin