JSF navigation redirect to previous page

Question

Once the user successful login to the system, the system will redirect the user to the homepage. Now my problem is, if the user clicks on the view account page without login

Answer 1

java.lang.IllegalStateException: Cannot forward after response has been committed

The exception is fairly clear:

• The response has been committed.
• You cannot forward after the response has been committed.

What doesn't make sense?