Fatal error: Uncaught Error: Class "Vich\UploaderBundle\Handler\AbstractHandler" not found in /var/www/crm_killing_ninja/vendor/vich/uploader-bundle/src/Handler/UploadHandler.php:21 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/vich/uploader-bundle/src/Handler/UploadHandler.php on line 21