I have Ubuntu 18.04 LTS MATE installed.
The system is fully upgraded, does not have PPAs and/or thirdparty repositories added.
I have installed Plasma Discover by the following simple commands:
sudo apt-get install plasma-discover \ plasma-discover-flatpak-backend plasma-discover-snap-backend
When I try to launch it from GUI - it does not open.
If I try to open it from terminal I get:
$ plasma-discover QQmlApplicationEngine failed to load component qrc:/qml/DiscoverWindow.qml:3 module "QtQuick.Controls" is not installed Errors when loading the GUI no packages for "org.gnome.DiskUtility" no packages for "org.mate-desktop.mate-eiciel" no packages for "org.gnome.DejaDup" empty appstream db setting currentApplicationBackend PackageKitBackend(0x557c7d4a1c00)
What should I do to fix these errors?