The getter 'isSubmissionFailure' isn't defined for the type 'FormzStatus'.

[Kasymbekov Sultanmyrza]

I was following tutorial https://bloclibrary.dev/#/flutterlogintutorial

but when I reach step https://bloclibrary.dev/#/flutterlogintutorial?id=login-form
I got this error

The getter 'isSubmissionFailure' isn't defined for the type 'FormzStatus'.
Try importing the library that defines 'isSubmissionFailure', correcting the name to the name of an existing getter, or defining a getter or field named 'isSubmissionFailure'

I tried to follow code as close as possible restarted vsocde etc.
Fun fact: when I open example_code it is not showing this error.

Here is the repo with commit for reproducing error above

[Philip Nunoo]

Importing import 'package:formz/formz.dart'; on top of the file fixed it for me.