Issue #3346692: Error in /admin/reports/content-model/entity-diagram route

src/Controller/EntityDiagramController.php

@@ -6,7 +6,7 @@ use Drupal\Core\Controller\ControllerBase;
 use Drupal\Core\Entity\EntityFieldManagerInterface;
 use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
-use Drupal\Core\Http\RequestStack;
+use Symfony\Component\HttpFoundation\RequestStack;
 use Drupal\Core\Render\RendererInterface;
 use Drupal\Core\Url;
 use Drupal\content_model_documentation\EntityBundleId;
@@ -49,7 +49,7 @@ class EntityDiagramController extends ControllerBase {
   /**
    * The request stack.
    *
-   * @var \Symfony\Component\HttpFoundation\Request
+   * @var Symfony\Component\HttpFoundation\Request
    */
   protected $request;
 
@@ -92,7 +92,7 @@ class EntityDiagramController extends ControllerBase {
    *   The EntityFieldManagerInterface service.
    * @param \Drupal\Core\Render\RendererInterface $renderer
    *   The Renderer service.
-   * @param \Drupal\Core\Http\RequestStack $request
+   * @param Symfony\Component\HttpFoundation\RequestStack $request
    *   The Request service.
    */
   public function __construct(EntityFieldManagerInterface $entity_field_manager, EntityTypeBundleInfoInterface $entity_type_bundle_info, EntityTypeManagerInterface $entity_type_manager, RendererInterface $renderer, RequestStack $request) {