diff --git a/webapp/controller/ShopController.class.php b/webapp/controller/ShopController.class.php
index e3168dfc..d9380975 100644
--- a/webapp/controller/ShopController.class.php
+++ b/webapp/controller/ShopController.class.php
@@ -1049,6 +1049,8 @@ class ShopController extends BaseAuthedController
                         $item_id,
                         $item_count
                     );
+                    
+                    error_log("buy normal 3, response = " . json_encode($response));
 
                     BcOrder::upsert($response['trans_id'], array(
                         'item_id' => $item_id,