Symfony2 error 500 instead of 404 at production

Question

In my Symfony2 project I\'m getting at development mode correct 404 Exception screen. But I\'m getting blank screen with HTTP status code 500 instead of 404 at production mo

Answer 1

I encounteres that Symofny 3 throws an 500 error in production when you do not use

$this->createNotFoundException()

in your Controller.

throw Exception('message', 404)

works on dev-enviroment, but not on production.