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SUMMARY
The app can only generate QR codes. However, it is not possible to decode a QR code with the camera or from an image or to display the about page.

STEPS TO REPRODUCE
1. Install via Discover or "snap install qrca"
2. run it


OBSERVED RESULT
After startup & menu option "Scannen" there is an empty side with only the menu button and the title "Scan QR code"
console output:
  kf.kirigami: Failed to find a Kirigami platform plugin
  ALSA lib conf.c:4553:(snd_config_update_r) Cannot access file /usr/share/alsa/alsa.conf
  Focus points mode selection is not supported
  Focus mode selection is not supported
  qrc:/QrCodeScannerPage.qml:148: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:101: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:162: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:52: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:83: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:148: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:101: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:162: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:52: TypeError: Cannot read property 'contentType' of undefined
  qrc:/QrCodeScannerPage.qml:83: TypeError: Cannot read property 'contentType' of undefined

When I try to allow the camera for the snap via "snap connect qrca:camera", this fails. A check of the possible plugs via "snap connections qrca" does not list the camera either. So the snap cannot use it.
The reason for this is probably that no plug for camera is defined in the source code under qrca/snapcraft.yaml.


Under menu item "Über" (about?) there is also a blank page with the menu button, but without a title.
console output:
  kf.kirigami: (qrc:/AboutPage.qml:8:1: module "org.kde.kirigamiaddons.formcard" is not installed
      import org.kde.kirigamiaddons.formcard 1.0 as FormCard
      ^)



EXPECTED RESULT
If I can install it via Discover or snap on a desktop system, it should work with all the options displayed in the GUI or CLI.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 24.04
(available in About System)
KDE Plasma Version: 5.27.11
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.13

ADDITIONAL INFORMATION
snap    2.63+24.04
snapd   2.63+24.04