The log message at the top of your screenshot is nothing to worry about, that's just part of gnome-shell. But it might be a bug...
To help us diagnose it further please run this command to collect the system log:
journalctl -b0 > journal.txt
Or if you have since rebooted then please run:
journalctl -b-1 > journal.txt
Make sure the error is in that log file and then please attach it here.
The log message at the top of your screenshot is nothing to worry about, that's just part of gnome-shell. But it might be a bug...
To help us diagnose it further please run this command to collect the system log:
journalctl -b0 > journal.txt
Or if you have since rebooted then please run:
journalctl -b-1 > journal.txt
Make sure the error is in that log file and then please attach it here.