Fatal error: Uncaught Error: Class 'Metadata\Driver\AbstractFileDriver' not found in /home/itscm/dev.its.cm/itsgateway/vendor/vich/uploader-bundle/src/Metadata/Driver/YamlDriver.php:14 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/itsgateway/vendor/vich/uploader-bundle/src/Metadata/Driver/YamlDriver.php on line 14