Symfony2: No route found for “GET /lucky/number”

Question

I start the tutorial (as newbie) and everythings works fine till:

http://symfony.com/doc/current/book/page_creation.html#creating-a-page-route-and-controller at step

Answer 1

In case someone else runs into this problem: for me the problem was twofold:

1. i forgot to assign a namespace namespace AppBundle\Controller;
2. i didn't add a use statement for the template use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;