diff -u b/menu_item_extras.module b/menu_item_extras.module
--- b/menu_item_extras.module
+++ b/menu_item_extras.module
@@ -156,14 +156,16 @@
     $variables['content']['#theme'] = 'menu';
     // Pass region name to the suggestions_menu_alter for
     // the region suggestion.
-    if (isset($variables['elements']['#id'])) {
+    if (!empty($variables['elements']['#id'])) {
       /** @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface $block_storage */
       $block_storage = \Drupal::entityTypeManager()
         ->getStorage('block');
       /** @var \Drupal\block\BlockInterface $block */
       $block = $block_storage->load($variables['elements']['#id']);
-      $variables['content']['#attributes']['data-region'] = $block->getRegion();
-    };
+      if (!empty($block)) {
+        $variables['content']['#attributes']['data-region'] = $block->getRegion();
+      }
+    }
   }
 }