Fatal error: Uncaught Error: Class 'Doctrine\ORM\Query\ResultSetMapping' not found in /var/www/vhosts/kavli-live/vendor/doctrine/orm/lib/Doctrine/ORM/Query/ResultSetMappingBuilder.php:31 Stack trace: #0 {main} thrown in /var/www/vhosts/kavli-live/vendor/doctrine/orm/lib/Doctrine/ORM/Query/ResultSetMappingBuilder.php on line 31