Fatal error: Uncaught Error: Interface "Symfony\Component\Serializer\Mapping\ClassDiscriminatorResolverInterface" not found in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\serializer\Mapping\ClassDiscriminatorFromClassMetadata.php:19 Stack trace: #0 {main} thrown in D:\xampp\htdocs\pimcore\my-project\vendor\symfony\serializer\Mapping\ClassDiscriminatorFromClassMetadata.php on line 19