Fatal error: Uncaught Error: Class "JMS\Serializer\Construction\UnserializeObjectConstructor" not found in /home/kiwakim/stock/vendor/jms/serializer/tests/Fixtures/InitializedBlogPostConstructor.php:10 Stack trace: #0 {main} thrown in /home/kiwakim/stock/vendor/jms/serializer/tests/Fixtures/InitializedBlogPostConstructor.php on line 10