Fatal error: Uncaught Error: Interface 'FOS\RestBundle\Serializer\Serializer' not found in /home/itscm/dev.its.cm/webservices/vendor/friendsofsymfony/rest-bundle/Serializer/SymfonySerializerAdapter.php:22 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/webservices/vendor/friendsofsymfony/rest-bundle/Serializer/SymfonySerializerAdapter.php on line 22