Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\ConstraintValidator' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\validator\Constraints\UuidValidator.php:31 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\validator\Constraints\UuidValidator.php on line 31