diff --git a/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php b/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php
index d0b9786..0d1d831 100644
--- a/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Routing/AggregatorController.php
@@ -13,7 +13,9 @@
 use Drupal\Core\Entity\EntityManager;
 use Drupal\Core\Extension\ModuleHandlerInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 
 /**
  * Returns responses for aggregator module routes.