This error is displayed when the executable, in this case, `evolution`, cannot be found in one of the directories defined in PATH. As Mike Ferreira notes, evolution-calendar.desktop can exist but incorrectly reference a non-installed application. In this case, the packaging should be reviewed.
Marking gnome-shell affected since it ships this file. $ apt-file search evolution-calendar.desktop app-install-data: /usr/share/app-install/desktop/gnome-shell:evolution-calendar.desktop gnome-shell: /usr/share/applications/evolution-calendar.desktop ** Also affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Changed in: menulibre (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1800740 Title: /usr/share/applications/evolution-calendar.desktop Exec program 'evolution -c calendar' has not ben found in th PATH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1800740/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs