Fatal error: Uncaught Error: Class "Symfony\Component\Validator\Constraint" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\form\Extension\Validator\Constraints\Form.php:19 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\form\Extension\Validator\Constraints\Form.php on line 19