Fatal error: Uncaught Error: Interface 'Doctrine\Common\Collections\Collection' not found in /home/clademy/lms.clademy.com/vendor/doctrine/collections/lib/Doctrine/Common/Collections/AbstractLazyCollection.php:16 Stack trace: #0 {main} thrown in /home/clademy/lms.clademy.com/vendor/doctrine/collections/lib/Doctrine/Common/Collections/AbstractLazyCollection.php on line 16