Fatal error: Uncaught Error: Class "Doctrine\ORM\Cache\Region\DefaultRegion" not found in /var/www/crm_killing_ninja/vendor/doctrine/orm/src/Cache/Region/DefaultMultiGetRegion.php:12 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/doctrine/orm/src/Cache/Region/DefaultMultiGetRegion.php on line 12