Fatal error: Uncaught Error: Class "Symfony\Component\Routing\Annotation\Route" not found in C:\xampp\htdocs\electronica\vendor\sensio\framework-extra-bundle\Configuration\Route.php:20 Stack trace: #0 {main} thrown in C:\xampp\htdocs\electronica\vendor\sensio\framework-extra-bundle\Configuration\Route.php on line 20