Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer" not found in /home/commyho2/public_html/drupaldistributionphp83.com1.myhost.id/dd4drutopia1/vendor/symfony/serializer/Normalizer/ObjectNormalizer.php:31 Stack trace: #0 {main} thrown in /home/commyho2/public_html/drupaldistributionphp83.com1.myhost.id/dd4drutopia1/vendor/symfony/serializer/Normalizer/ObjectNormalizer.php on line 31