Install language-pack-gnome-de-base by entering the following commands in the terminal:
sudo apt update sudo apt install language-pack-gnome-de-base
Description:
GNOME translations for language German
Translation data for all supported GNOME packages for: German . This package provides the bulk of translation data and is updated only seldom. language-pack-gnome-de provides frequent translation updates, so you should install this as well.
Version: 1:18.04+20180423
Section: translations