diff --git a/backend/Services/View/Adapters/Vuejs.php b/backend/Services/View/Adapters/Vuejs.php
index eb0a6ef..2943c61 100644
--- a/backend/Services/View/Adapters/Vuejs.php
+++ b/backend/Services/View/Adapters/Vuejs.php
@@ -17,6 +17,8 @@ use Filegator\Services\View\ViewInterface;
 class Vuejs implements Service, ViewInterface
 {
     private $config;
+    private $add_to_head = '';
+    private $add_to_body = '';
 
     public function __construct(Config $config)
     {