Fatal error: Uncaught Error: Interface 'Doctrine\Common\Collections\Collection' not found in /var/www/vhosts/kavli-live/vendor/doctrine/orm/lib/Doctrine/ORM/PersistentCollection.php:48 Stack trace: #0 {main} thrown in /var/www/vhosts/kavli-live/vendor/doctrine/orm/lib/Doctrine/ORM/PersistentCollection.php on line 48