Exercises G21

Description
An issue exists in the login functionality, specifically when attempting to log in to write a comment. When clicking the login button and providing valid login credentials, the application crashes. Subsequent attempts to restart the application and log in result in the same crash behavior, making it the login feature unusable.

Steps to reproduce
1) Open the application.
2) Find an article and try to write a comment.
3) Click on the login button.
4) Enter valid login credentials.
5) Click on the "Log in" button.
6) Observe that the application crashes unexpectedly without completing the login process.

Expected result
Upon entering valid login credentials and clicking on the "Log in" button, the app should successfully authenticate the user and proceed to write a comment.

Actual result
After providing valid login credentials and initiating the login process, the application crashes.