Task description

We have simple dashboard with two routes: register and dashboard(protected) One form with 3 fields firstName, lastName, and age(optional) On register page we create user and we have ability to update user information on dashboard page

1. Fix error in shared module (run and check console)
2. Fix userGuard for dashboard route (must be protected until user not create account)
3. Fix display user data on dashboard page
4. Add prefill data for update form
5. Add basic validation with error messages