Install lubuntu-qt-core by entering the following commands in the terminal:
sudo apt update sudo apt install lubuntu-qt-core
Description:
Lubuntu Desktop Qt environment - minimal installation
This metapackage package depends on the minimal components for an installation of Lubuntu Desktop system using Qt and the LXQt environment. . It is also used to help ensure proper upgrades, but it can be safely removed if you want to remove some applications installed by default.
Version: 0.94
Section: universe/metapackages