Fatal error: Uncaught Error: Interface 'Symfony\Component\Form\DataMapperInterface' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\form\Extension\Core\DataMapper\DataMapper.php:26 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\form\Extension\Core\DataMapper\DataMapper.php on line 26