Cannot launch snaps

As an update, now on Wayland, the first time I run snap-store in the terminal I get no console output and nothing happens, the second time this is reported:

❯ snap-store
19:20:35:0813 dbind Could not open X display
19:20:35:0815 Gtk Theme parsing error: gtk.css:1:0: Failed to import: Error opening file /var/lib/snapd/hostfs/usr/share/themes/Adwaita-nord/gtk-3.0/gtk.css: Permission denied
19:20:35:0851 Gs enabled plugins: desktop-categories, fwupd, os-release, packagekit, packagekit-local, packagekit-offline, packagekit-proxy, packagekit-refine-repos, packagekit-refresh, packagekit-upgrade, packagekit-url-to-app, appstream, desktop-menu-path, hardcoded-blacklist, hardcoded-popular, modalias, odrs, packagekit-refine, rewrite-resource, packagekit-history, provenance, snap, systemd-updates, generic-updates, provenance-license, icons, key-colors, key-colors-metadata
19:20:35:0851 Gs disabled plugins: dpkg, dummy, fedora-langpacks, fedora-pkgdb-collections, repos
19:20:35:0908 Gs /etc/PackageKit/Vendor.conf file not found
19:20:36:0026 Pango pango_font_get_hb_font: assertion 'PANGO_IS_FONT (font)' failed
[1] 17938 segmentation fault (core dumped) snap-store

For Chromium on Wayland, running chromium in the terminal yields this:

[18845:18845:1120/202231.087920:ERROR:browser_main_loop.cc(1434)] Unable to open X display.

Update: since this all seems very similar to Bug #1897224, I will report back when the fix lands. However, my apps not only do not work on wayland, they do not work on X either, so maybe that is a different issue. Furthermore, a segmentation fault should not occur in any case for the snap-store. Therefore, I will keep this bug open.

Do you have any logs? Is it a problem connecting to the X server or does the snap (snap store?) segfault after it has started?

Those mentioned in the above comments (the snap-store one is in the seccond comment) are all I have. If you can tell me how to get more logs I'll do that. But from the log that I posted above, it seems that there is a problem with the X server, which also impacts Chromium, but there is a problem with the font loading, as there is an assert error, and then a segmentation fault that occurs afterwards. I am not sure why the X-server is called at all for the snap-store, as gtk uses Wayland.

Try disabling access control by running `xhost +` and see what happens then.

For snap-store you can try the edge channel (snap refresh --edge snap-store), afaik it contains some improvements related to font cache handling which may well fix the segfault.