NullInjectorError: R3InjectorError(Platform: core)[t -> Cr]

[giammariomarini]

the solution is suggested in this post

How to trace NullInjectorError which appears in Production environment only

I have the same issue. I created e new blank project and I tried to deploy on Android (emulator or phisical mobile) it fails with error “NullInjectorError: No provider for Cr!” if I try with “ionic cap run android -l --external” it work fine

and NorthFred also suggest paying attention and using it with caution