Snap applications won't run from KDE Launcher but will from command line
July 15, 2024
In a console window, run the following:
tail -f ~/.xsession-errorsAttempt to launch your application via Launcher and look for an error involving "is not a snap cgroup". If you see it, then you should attempt the fix that worked for us: 1) Locate the icon in Launcher and right-click it. 2) Click Edit Application and navigate to the Application tab. 3) Add the following to the beginning of the command:
export DBUS_SESSION_BUS_ADDRESS="unix:path=$XDG_RUNTIME_DIR/bus" &4) Click OK and attempt to launch your application again.