Fatal error: Uncaught Error: Interface "FOS\RestBundle\Serializer\Serializer" not found in /home/gingerbrup/rappelapi/vendor/friendsofsymfony/rest-bundle/Serializer/SymfonySerializerAdapter.php:22 Stack trace: #0 {main} thrown in /home/gingerbrup/rappelapi/vendor/friendsofsymfony/rest-bundle/Serializer/SymfonySerializerAdapter.php on line 22