update

@@ -166,7 +166,7 @@ class NavLogic extends  BaseLogic
                 continue;
             }
             $data[] = [
-                'pid' => $nav_pid,
+                'pid' => $nav_pid ?: 0,
                 'name' => $item['name'],
                 'url' => $item['alias'],
                 'project_id' => $this->project['id'],