Fatal error: Uncaught Error: Class 'AppBundle\Form\Extension\CollectionTypeExtension' not found in /home/cgenial/sandbox.cgenial.org/var/cache/prod/ContainerR50tdjz/getCollectionTypeExtensionService.php:8 Stack trace: #0 {main} thrown in /home/cgenial/sandbox.cgenial.org/var/cache/prod/ContainerR50tdjz/getCollectionTypeExtensionService.php on line 8