I am experiencing this same issue on Fedora 29 after installing the Krita snap. It is using core18 also.
krita: execl failed: No such file or directory child exited with status 1 snap 2.37.2-1.fc29 snapd 2.37.2-1.fc29 series 16 fedora 29 kernel 4.20.8-200.fc29.x86_64 core18 18 719 stable krita 4.1.7.101 44 stable -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1808959 Title: [snap] core18-based snap fails to start on Solus Status in chromium-browser package in Ubuntu: Confirmed Bug description: After installation of chromium and I try to start it I get this error inside my terminal. fredu ~ chromium execv failed: No such file or directory System: Description: Solus Release: 3.9999 Chromium: stable snapd: 2.36.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1808959/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

