Install vala-panel-appmenu-common by entering the following commands in the terminal:
sudo apt update sudo apt install vala-panel-appmenu-common
Description:
Common files for Application Menu plugins
This is an Application Menu (Global Menu) plugin. It is built using the Unity protocol and libraries and provides all features found in the Unity implementation. . This package provides common files.
Homepage: https://github.com/rilian-la-te/vala-panel-appmenu
Version: 0.6.94+repack1-1
Section: universe/x11