Comment 10 for bug 1873388

I now have this exact same issue on a new Ubuntu 22.04 install. Launching the Ubuntu Software application from the desktop gives the following messages in syslog:

Jun 5 11:20:37 marlinc-desktop systemd[4002]: Started Application launched by gnome-shell.
Jun 5 11:20:37 marlinc-desktop systemd[4002]: Started snap.snap-store.ubuntu-software.dfdb36d0-3b08-4479-8b8d-f38e8ff7556a.scope.
Jun 5 11:20:38 marlinc-desktop kernel: [ 874.254174] audit: type=1326 audit(1654420838.012:77): auid=1000 uid=1000 gid=1000 ses=3 subj=? pid=22299 comm="snap-store" exe="/snap/snap-store/582/usr/bin/snap-store" sig=0 arch=c000003e syscall=314 compat=0 ip=0x7f96a63e473d code=0x50000
Jun 5 11:20:38 marlinc-desktop snap-store[22299]: Settings schema 'org.gnome.software' is not installed
Jun 5 11:20:38 marlinc-desktop kernel: [ 874.305483] traps: snap-store[22299] trap int3 ip:7f96a740f187 sp:7fff6109f780 error:0 in libglib-2.0.so.0.6400.6[7f96a73ca000+9a000]

Launching snap-store manually through the terminal gives:

09:21:09:0543 GLib-GIO Settings schema 'org.gnome.software' is not installed
Trace/breakpoint trap (core dumped)