Fatal error: Uncaught Error: Class 'Symfony\Component\Validator\ConstraintValidator' not found in C:\Apache24\htdocs\vehicle\vendor\symfony\validator\Constraints\HostnameValidator.php:22 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vehicle\vendor\symfony\validator\Constraints\HostnameValidator.php on line 22