Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer" not found in /home/wizilen/www/vendor/symfony/serializer/Normalizer/GetSetMethodNormalizer.php:38 Stack trace: #0 {main} thrown in /home/wizilen/www/vendor/symfony/serializer/Normalizer/GetSetMethodNormalizer.php on line 38