Install gir1.2-gdesktopenums-3.0 by entering the following commands in the terminal:
sudo apt update sudo apt install gir1.2-gdesktopenums-3.0
Description:
GObject introspection for GSettings desktop-wide schemas
gsettings-desktop-schemas contains a collection of GSettings schemas for settings shared by various components of a desktop. . This package contains introspection data for GSettings desktop-wide schemas. It can be used by packages using the GIRepository format to generate dynamic bindings.
Homepage: http://www.gnome.org/
Version: 3.28.0-1ubuntu1
Section: introspection