Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Kernel' not found in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\vich\uploader-bundle\Event\Event.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ApiSigestWin\1.0\vendor\vich\uploader-bundle\Event\Event.php on line 15