Exercises G32

When a user clicks on the login button and tries to log in app crashes

Steps to reproduce:
1. Download "MyRecipies"
2. Open the app on mobile
3. Browse through the recipes
4. Click on "Leave comment" and see if popup is shown "To leave a comment you neet to be logged in or signed up"
5. Click on Log in button
6. Observe

Expected result: When user clicks on Login button he should be navigated to Log in form, and when logged in he should be able to leave comments

Actual result: When user clicks on Login button the app crashes

Platform: mobile