Fatal error: Uncaught Error: Interface 'Doctrine\Persistence\ObjectManager' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\orm\lib\Doctrine\ORM\EntityManagerInterface.php:33 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\orm\lib\Doctrine\ORM\EntityManagerInterface.php on line 33