Created attachment 153258 [details] Screenshot of the bugtarcker for filing a muon Bug SUMMARY Muon calls the wrong app (software-properties-kde instead of software-properties-qt) in KDE neon Jammy STEPS TO REPRODUCE 1. Click on the configure menu toolbox (I'm in french so the name might not be exactly that) 2. select "configure sofware source" 3. Errror Message (In french "Impossible de trouver <command>software-properties-kde</command> sur votre système ; veuillez l'installer. Vous pouvez également utiliser <application>Plasma Discover</application> pour configurer les sources de logiciels.") ( translated it goes something like this : <command>software-properties-kde</command> not found on your system; please install it. You can also use <application>Plasma Discover</application> to configure software source. OBSERVED RESULT Error message EXPECTED RESULT Launch software-properties-qt SOFTWARE/OS VERSIONS Operating System: KDE neon 5.26 KDE Plasma Version: 5.26.2 KDE Frameworks Version: 5.99.0 Qt Version: 5.15.6 Kernel Version: 5.15.0-53-generic (64-bit) ADDITIONAL INFORMATION Graphics Platform: X11 Graphics Processor: NVIDIA ADDITIONAL remark: I couldn't file this bug under the muon app intsead I got this lovely message "Sorry, entering a bug into the product muon has been disabled. "
Muon is not supported anymore and is to be considered de facto abandonware. You can fix the issue by manually creating a link: sudo ln -s /usr/bin/software-properties-{kde,qt} This will make the software sources application open as expected.