Same problem for me, after an update of appearance and snap 2.32, I can not start many snap.
snap run firefox execl failed: No such file or directory child exited with status 1 snap run keepassxc execl failed: No such file or directory child exited with status 1 and almost any other snap, telegram works. apt list snapd Elencazione... Fatto snapd/bionic,now 2.32+18.04~pre5 amd64 [installato] apt list -a apparmor Elencazione... Fatto apparmor/bionic-proposed,now 2.12-3ubuntu1 amd64 [installato] apparmor/bionic 2.11.0-2ubuntu19 amd64 Log: https://paste.ubuntu.com/p/9XsYf3Vvwf/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1756793 Title: Can't run snaps on Ubuntu 18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1756793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs