Install kwayland-integration by entering the following commands in the terminal:
sudo apt update sudo apt install kwayland-integration
Description:
kwayland runtime integration plugins
Wayland runtime integration plugins for kidletime and kwindowsystem. . Contains development files for kwayland-integration.
Homepage: https://projects.kde.org/projects/kde/workspace/kwayland-integration
Version: 4:5.12.4-0ubuntu1
Section: universe/kde