Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer" not found in C:\laragon\www\Clinic\vendor\symfony\serializer\Normalizer\ObjectNormalizer.php:36 Stack trace: #0 {main} thrown in C:\laragon\www\Clinic\vendor\symfony\serializer\Normalizer\ObjectNormalizer.php on line 36