Fatal error: Uncaught Error: Interface "Symfony\Component\HttpFoundation\Session\SessionInterface" not found in C:\svn\carga\vendor\symfony\http-foundation\Session\FlashBagAwareSessionInterface.php:19 Stack trace: #0 {main} thrown in C:\svn\carga\vendor\symfony\http-foundation\Session\FlashBagAwareSessionInterface.php on line 19