GNOME Software was pretty much freezing in Debian 12. Here's how I fixed it

My 2011 iMac 27-inch running Debian 12 (upgraded since 10) was having an issue with GNOME Software. The app would start, but it would “spin” forever, never allowing me to add, remove or update software.

A quick search produced this fix, which worked immediately:

To fix Gnome Software getting stuck with “Software catalog is being loaded” being shown, kill the application and remove its cache using these two commands:

$ killall gnome-software
$ rm -rf ~/.cache/gnome-software

Then restart GNOME Software. It works!