Exercises G21

Description
When the user is trying to loggin to application (with valid credentials) the application crashes.

Preconditions
The app should be downloaded and instaled. The user should be registrated to the app.

Steps to reproduce
Open the application
On the loggin page enter the valid credentials
Click on 'Login' button

Expected result
The user should be successfully logged on the application.

Actual result
The application crashes.