Fatal error: Uncaught Error: Interface "Symfony\Component\Routing\Generator\Dumper\GeneratorDumperInterface" not found in I:\www\frameworks\Symfony\doctrine\vendor\symfony\routing\Generator\Dumper\GeneratorDumper.php:21 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\symfony\routing\Generator\Dumper\GeneratorDumper.php on line 21