Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\SerializerInterface" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\serializer\Serializer.php:49 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\serializer\Serializer.php on line 49