Fatal error: Uncaught Error: Class "Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\sensio\framework-extra-bundle\src\Configuration\Entity.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\sensio\framework-extra-bundle\src\Configuration\Entity.php on line 21