Fatal error: Uncaught Error: Class 'Doctrine\DBAL\DBALException' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\dbal\lib\Doctrine\DBAL\Exception.php:8 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\doctrine\dbal\lib\Doctrine\DBAL\Exception.php on line 8