diff --git a/core/modules/views_ui/lib/Drupal/views_ui/ViewListController.php b/core/modules/views_ui/lib/Drupal/views_ui/ViewListController.php
index 62ffce8..3fa9bc3 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/ViewListController.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/ViewListController.php
@@ -251,6 +251,10 @@ protected function getDisplayPaths(EntityInterface $view) {
     $executable = $view->getExecutable();
     $executable->initDisplay();
     foreach ($executable->displayHandlers as $display) {
+      // DisplayBag may return NULL if a plugin was not found.
+      if (!isset($display)) {
+        continue;
+      }
       if ($display->hasPath()) {
         $path = $display->getPath();
         if ($view->status() && strpos($path, '%') === FALSE) {