SUMMARY
The application shows me a Button "+ New Notebook". When I press that, nothing happens. Same when I select that function from the menu.
Checking what version I have fails, because the about dialog doesn't show that.
I updated my arch system just yesterday.
strace says:
write(2, "qrc:/qt/qml/org/kde/marknote/qml"..., 97qrc:/qt/qml/org/kde/marknote/qml/Main.qml:56: TypeError: Cannot read property 'Add' of undefined
) = 97

STEPS TO REPRODUCE
1. Install Marknote from arch extra Repo (Version 1.1.1-1)
2. Start the application
3. Hit +New Notebook

OBSERVED RESULT
Nothing happens

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.3

ADDITIONAL INFORMATION