Install gconf2 by entering the following commands in the terminal:
sudo apt update sudo apt install gconf2
Description:
GNOME configuration database system (support tools)
GConf is a configuration database system for storing application preferences. It supports default or mandatory settings set by the administrator, and changes to the database are instantly applied to all running applications. It is written for the GNOME desktop but doesn't require it. . This package contains the command line tools: gconftool and gconf-merge-tree.
Homepage: http://projects.gnome.org/gconf/
Version: 3.2.6-4ubuntu1
Section: universe/libs