SUMMARY *** When trying to setup Kbackup by a click on the green button (link "appstream://org.kde.kbackup"), Discover opens but after a few seconds an error message pops up inside the Discover windows: "impossible d'ouvrir le lien appstream://org.kde.kbackup", which means: impossible to open the link appstream://org.kde.kbackup STEPS TO REPRODUCE 1. Open the page https://apps.kde.org/fr/kbackup/ with Firefox 2. Click on the green button (link "appstream://org.kde.kbackup") 3. Select "Discover" to open the link OBSERVED RESULT Discover opens but after a few seconds an error message pops up inside the Discover windows: "impossible d'ouvrir le lien appstream://org.kde.kbackup", which means: impossible to open the link appstream://org.kde.kbackup EXPECTED RESULT Correct setup of Kbackup SOFTWARE/OS VERSIONS Linux/KDE Neon version: 5.23-4 ADDITIONAL INFORMATION