Fatal error: Uncaught Error: Class "Symfony\Component\Serializer\Serializer" not found in /home/qcsvlel/www/core/modules/jsonapi/src/Serializer/Serializer.php:25 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/jsonapi/src/Serializer/Serializer.php on line 25