Fatal error: Uncaught Error: Interface "Symfony\Component\VarDumper\Dumper\DataDumperInterface" not found in E:\www\catalog_frey\qgmvc\v1.0\composer\vendor\symfony\var-dumper\Dumper\ContextualizedDumper.php:20 Stack trace: #0 {main} thrown in E:\www\catalog_frey\qgmvc\v1.0\composer\vendor\symfony\var-dumper\Dumper\ContextualizedDumper.php on line 20