Install gir1.2-matemenu-2.0 by entering the following commands in the terminal:
sudo apt update sudo apt install gir1.2-matemenu-2.0
Description:
GObject introspection data for the MATE menu specification
This package contains introspection data for MATE menu specification, an implementation of the draft "Desktop Menu Specification" from freedesktop.org. . It can be used by packages using the GIRepository format to generate dynamic bindings.
Homepage: http://www.mate-desktop.org/
Version: 1.20.0-2
Section: universe/introspection