Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Normalizer\AbstractNormalizer" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\serializer\Normalizer\JsonSerializableNormalizer.php:24 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\serializer\Normalizer\JsonSerializableNormalizer.php on line 24