Install gnustep-common by entering the following commands in the terminal:
sudo apt update sudo apt install gnustep-common
Description:
Common files for the core GNUstep environment
This package contains the main GNUstep configuration file, common files, scripts and directory layout needed to run any GNUstep software.
Homepage: http://gnustep.org
Version: 2.7.0-3
Section: universe/libs