How to resolve WFBackgroundShortcutRunner-ErrorDomain error 0 on Apple M1 iMac?

EtreCheckPro is an excellent tool for finding and sorting out problems.

Download and run the free version of EtreCheckPro, from > https://etrecheck.com/en/index.html

Then post back here with your Report, as per > How to use the Add Text Feature When Post… - Apple Community

Start up in Safe Mode followed by a normal Restart.

Start up your Mac in safe mode - Apple Support

+1 on the EtreCheck report, if you don't post a report then we have nothing to really go on.