diff -u b/core/modules/big_pipe/src/Render/BigPipe.php b/core/modules/big_pipe/src/Render/BigPipe.php
--- b/core/modules/big_pipe/src/Render/BigPipe.php
+++ b/core/modules/big_pipe/src/Render/BigPipe.php
@@ -80,6 +80,13 @@
   protected $eventDispatcher;
 
   /**
+   * The config factory.
+   *
+   * @var \Drupal\Core\Config\ConfigFactoryInterface
+   */
+  protected $configFactory;
+
+  /**
    * Constructs a new BigPipe class.
    *
    * @param \Drupal\Core\Render\RendererInterface $renderer
@@ -93,7 +100,7 @@
    * @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
    *   The event dispatcher.
    * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
-   *   A config factory for retrieving required config objects.
+   *   The config factory.
    */
   public function __construct(RendererInterface $renderer, SessionInterface $session, RequestStack $request_stack, HttpKernelInterface $http_kernel, EventDispatcherInterface $event_dispatcher, ConfigFactoryInterface $config_factory) {
     $this->renderer = $renderer;