Boolean expression must not be null?

Question

Does anyone know why i got the Failed assertion: boolean expression must not be null. If I had logged in and quit the app and open the app again i should be directly in the home

Answer 1

If your 'value' here can become null - you get the error. To be safe change the line inside setState to:

userIsLoggedIn = value ?? false; 

it will set the bool to false if value is null