SUMMARY STEPS TO REPRODUCE 1. Install Kontact Flatpak 19.04.1 stable package on Kubuntu 18.04 2. Start Akonadi if necessessary 3. Run Kontact Flatpak OBSERVED RESULT Messages say wrong QT version and Akonadi not functioning properly and will try again... EXPECTED RESULT Kontact Should start with Akonadi working properly SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Kubuntu 18.04 (available in About System) KDE Plasma Version: 5.9 KDE Frameworks Version: 54.0 Qt Version: 5.9.5 ADDITIONAL INFORMATION Kernel: 4.18.0-25-generic