Install cdebconf-gtk by entering the following commands in the terminal:
sudo apt update sudo apt install cdebconf-gtk
Gtk+ frontend for Debian Configuration Management System
Debconf is a configuration management system for Debian packages. It is used by some packages to prompt you for information before they are installed. This is a reimplementation of the original debconf version in C. . cdebconf-gtk is a minimal Gtk+ frontend cdebconf package.