I have attached the crash report. In particular, it says: “This app has crashed because it attempted to access privacy-sensitive data without a usage description. The app’s Info.plist must contain an NSCameraUsageDescription key with a string value explaining to the user how the app uses this data.”
When you tried to reproduce the issues, did you create a new project with a new name? Because maybe, if you used the name of a previous iOS app, that app was already authorised for the camera … just trying to guess.