Fatal error: Uncaught Error: Class "Symfony\Component\Routing\Exception\ResourceNotFoundException" not found in /home/www/drupal8/test/core/lib/Drupal/Core/Routing/MatchingRouteNotFoundException.php:10 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/lib/Drupal/Core/Routing/MatchingRouteNotFoundException.php on line 10