Fatal error: Uncaught Error: Class 'Doctrine\ORM\Cache\Region\DefaultRegion' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\orm\lib\Doctrine\ORM\Cache\Region\UpdateTimestampCache.php:33 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\orm\lib\Doctrine\ORM\Cache\Region\UpdateTimestampCache.php on line 33