I used to have psensor but I purged it. Even when I choose to update other applications this CPU temperature meter entry stays there and hangs muon updater. Closing muon updater and reopening does nothing.
Other applications where updated successfully.
Moun discover finds CPU temperature meter but as not installed.
Edit:
It appeared that I installed by Moun discover. The problem was that uninstalling in Moun discover didn't work because of some bug, I guess. I uninstalled Moun discover and this solved the problem. It doesn't appear in Muon updater anymore.