Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-bundle\DependencyInjection\MainConfiguration.php:30 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\security-bundle\DependencyInjection\MainConfiguration.php on line 30