Exercises G32

When trying to login to the app on a mobile device, the app crashes after clicking the button Logged in
Steps to reproduce:
1.Open the app on a mobile device while not logged in.
2.Click on the "Log in" button
3.Enter valid login credentials
4.Click on the "Log in" button
Expected Result:
The app should successfully authenticate the user and redirect to the appropriate screen without crashing.
Actual Result:
The app crashes immediately after clicking the "Log in" button.