Install system-tools-backends by entering the following commands in the terminal:
sudo apt update sudo apt install system-tools-backends
Description:
System Tools to manage computer configuration -- scripts
The System Tools Backends are a set of cross-platform scripts for Linux and other Unix systems. The backends provide a standard XML interface for modifying the configuration regardless of the distribution that's being used. . These backends are used in GNOME System Tools.
Homepage: http://system-tools-backends.freedesktop.org/
Version: 2.10.2-3
Section: universe/gnome