Fatal error: Uncaught Error: Class 'Doctrine\ORM\Query\TreeWalkerAdapter' not found in C:\Apache24\htdocs\cwlms\vendor\doctrine\orm\lib\Doctrine\ORM\Tools\Pagination\CountWalker.php:37 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cwlms\vendor\doctrine\orm\lib\Doctrine\ORM\Tools\Pagination\CountWalker.php on line 37