_OBJC_CLASS errors when trying to build xCode project
The reason for the error is the missing CoreML framework in platform settings. After xCode project this option may be turned off in some Unity version. Steps to fix the issue:
BNBRecognizerplugin in Unity assets.
- Open platforms → Rarely used frameworks → enable
The app's Info.plist must contain an
NSCameraUsageDescription exception, add this key to your app Info.plist.