Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Normalizer\AbstractNormalizer" not found in C:\laragon\www\sfomantic\vendor\symfony\serializer\Normalizer\AbstractObjectNormalizer.php:40 Stack trace: #0 {main} thrown in C:\laragon\www\sfomantic\vendor\symfony\serializer\Normalizer\AbstractObjectNormalizer.php on line 40