Fatal error: Uncaught Error: Interface "Symfony\Component\Cache\Marshaller\MarshallerInterface" not found in E:\www\frey\qgmvc\v1.0\composer\vendor\symfony\cache\Marshaller\DefaultMarshaller.php:21 Stack trace: #0 {main} thrown in E:\www\frey\qgmvc\v1.0\composer\vendor\symfony\cache\Marshaller\DefaultMarshaller.php on line 21