Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Encoder\DecoderInterface" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\serializer\Encoder\JsonDecode.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\serializer\Encoder\JsonDecode.php on line 21