Failure to install Android APK "App not installed as package appears to be invalid"

[PureTryOut]

I'm trying to install the Android APK (I'm just assuming it's an Android package rather than an Alpine Linux one which also uses the .apk extension :stuck_out_tongue_winking_eye:) on an aarch64 device running Android 13 (CalyxOS to be exact). However it fails to do so mentioning the package appears to be invalid.

(sorry for the large picture size, not sure how to make GitHub show it smaller and I'm too lazy to resize the image locally)