Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\DelegatingLoader" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\framework-bundle\Routing\DelegatingLoader.php:29 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\framework-bundle\Routing\DelegatingLoader.php on line 29