Install kf5-messagelib-data by entering the following commands in the terminal:
sudo apt update sudo apt install kf5-messagelib-data
Description:
KDE PIM messaging library, data files
This package contains the data files shipped with the message libraries. . This package is part of KDE PIM module.
Homepage: http://pim.kde.org/
Version: 4:17.12.3-0ubuntu3
Section: universe/libs