Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Extension\Extension' not found in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\vich\uploader-bundle\DependencyInjection\VichUploaderExtension.php:18 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\vich\uploader-bundle\DependencyInjection\VichUploaderExtension.php on line 18