Comment 27 for bug 1563155

Here is the list of things I've tried (in order, not sure if the order made a difference in fixing)

- changing language and restarting (didn't work)

- sudo apt purge gnome-software ubuntu-software
    sudo apt autoremove
    sudo apt install gnome-software ubuntu-software (didn't work)

- sudo appstreamcli refresh --force --verbose (didn't work)

- sudo rm -r /var/cache/app-info && sudo appstreamcli refresh --force --verbose (didn't work)

- killall gnome-software ; gnome-software --verbose | tee /tmp/gnome-software.log (then ctrl-c and it worked)

I'm assuming some combination of this fixed it. Hopefully this helps in finding the correct solution