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

Had the same issue, but for a completely different reason than those shown here so far...

Somehow my demo wasn't defining a default locale. There appear to be a number of configurations that could address this, but I'm not familiar enough with Symfony yet to know the exact cause. My solution until then is to simply define the locale in the URL, for example:

/app_dev.php/en/lucky/number