Fatal error: Uncaught Error: Class "Vich\UploaderBundle\Handler\AbstractHandler" not found in /var/www/crm_killing_ninja/vendor/vich/uploader-bundle/src/Handler/DownloadHandler.php:13 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/vich/uploader-bundle/src/Handler/DownloadHandler.php on line 13