Exercises G22

Description
When a logged-out user attempts to write a comment, they are redirected to the login page. However, if they try to log in with valid credentials, the application crashes. Even after restarting the application and attempting to log in again, the same crash occurs.

Steps to reproduce:

1. Click on "login" button
2. Enter your valid credentials
3. Click on login.

Expected result:
The user should be logged in into application.

Actual result:
The application crushes.