Fatal error: Uncaught Error: Interface "Doctrine\ORM\Cache\QueryCacheValidator" not found in /home/ldt/public_html/canvas/udoit/vendor/doctrine/orm/src/Cache/TimestampQueryCacheValidator.php:9 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/doctrine/orm/src/Cache/TimestampQueryCacheValidator.php on line 9