diff --git a/src/Plugin/MenuItemsFormat/NestedMenuItemsFormat.php b/src/Plugin/MenuItemsFormat/NestedMenuItemsFormat.php
index a99ff5c257a70dc2e6e54b95e4a75a595b179902..b9c9a9ce297f9213e493f9f6380145192d54a44a 100644
--- a/src/Plugin/MenuItemsFormat/NestedMenuItemsFormat.php
+++ b/src/Plugin/MenuItemsFormat/NestedMenuItemsFormat.php
@@ -173,7 +173,10 @@ class NestedMenuItemsFormat extends MenuItemsFormatBase implements ContainerFact
     $cache->addCacheableDependency($url);
 
     $id = $menuLink->getPluginId();
-    [$plugin, $menuLinkEntityId] = explode(':', $id);
+    $plugin = '';
+    if (strpos($id, ':') !== FALSE) {
+      [$plugin, $menuLinkEntityId] = explode(':', $id);
+    }
 
     $data = [
       'id' => $id,