MicrosoftLiveConnectApi Error (NoSuchMethodError)

[samgithub-duplicate]

I am running the sample at
https://github.com/Clancey/simple_auth/blob/master/simple_auth_flutter_example/lib/main.dart

Changing only clientID and secret. for MicrosoftLiveConnectApi

I get this error
NoSuchMethodError: The method 'resetAuthenticator' was called on null

the error is triggered by:
var success = await api.authenticate();