symfony/symfony — pull request #13169 by nahpeps (2014-12-30 11:31:42+00:00)
Title: Update ExceptionController.php

Changed namespace of used FlattenException from HttpKernel to Debug, because SF 2.6 call the showAction with a Symfony\Component\Debug\Exception\FlattenException

The Problem can be reproduced when you use the /app_dev.php/_error/500 example taken from
http://symfony.com/doc/current/cookbook/controller/error_pages.html