Fatal error: Uncaught Error: Class "Doctrine\Common\DataFixtures\ReferenceRepository" not found in /home/ldt/public_html/canvas/udoit/vendor/doctrine/data-fixtures/src/ProxyReferenceRepository.php:20 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/doctrine/data-fixtures/src/ProxyReferenceRepository.php on line 20