This File "/usr/lib/python3/dist-packages/cola/hotkeys.py", line 12, in <module> STAGE_MODIFIED = hotkey(Qt.ALT + Qt.Key_A) TypeError: unsupported operand type(s) for +: 'Modifier' and 'Key' is one of the qt stuff which doesn't work anymore. I tried to set up a qt-development environment, but installed some libs as sudo. I ignored warnings about installing as sudo :-( Tried to apt-remove qt and reinstall Tried apt remove git-cola /purge /install again It seems, as I mixed up a lot of python and qt stuff. Please help me, to get git-cola and qt running again. More info: Linux .. 6.8.0-60-generic #63~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 22 19:00:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux Continue reading...