Fatal error: Uncaught Error: Class 'Doctrine\ORM\Query\ResultSetMapping' not found in /home/itscm/dev.its.cm/itsrestapi/vendor/doctrine/orm/lib/Doctrine/ORM/Query/ResultSetMappingBuilder.php:33 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/itsrestapi/vendor/doctrine/orm/lib/Doctrine/ORM/Query/ResultSetMappingBuilder.php on line 33