diff --git a/src/Base/NotFoundController.php b/src/Base/NotFoundController.php
index fd93cfb..8cff4f7 100644
--- a/src/Base/NotFoundController.php
+++ b/src/Base/NotFoundController.php
@@ -15,10 +15,8 @@ class NotFoundController extends Controller
      */
     public function fail(): ResponseInterface
     {
-		var_dump($this->request->getMethod());
-		var_dump($this->response);
         if ($this->request->getMethod() == 'OPTIONS') {
-            return $this->response->html('');
+            return $this->response->json([], 200);
         } else {
             return $this->response->withStatus(404, "not found page.");
         }