Fatal error: Uncaught Error: Class "Symfony\Component\Routing\Generator\Dumper\GeneratorDumper" not found in D:\Application\www\Training\vendor\symfony\routing\Generator\Dumper\PhpGeneratorDumper.php:20 Stack trace: #0 {main} thrown in D:\Application\www\Training\vendor\symfony\routing\Generator\Dumper\PhpGeneratorDumper.php on line 20