Issue #3052574: Facets with AJAX not working in most of situations

src/Controller/FacetBlockAjaxController.php

@@ -10,6 +10,7 @@ use Drupal\Core\Block\Plugin\Block\Broken;
 use Drupal\Core\Controller\ControllerBase;
 use Drupal\Core\Path\CurrentPathStack;
 use Drupal\Core\PathProcessor\PathProcessorManager;
+use Drupal\Core\Render\RendererInterface;
 use Drupal\Core\Routing\CurrentRouteMatch;
 use Drupal\facets\Plugin\Block\FacetBlock;
 use Symfony\Component\DependencyInjection\ContainerInterface;