diff --git a/app/Http/Controllers/Manager/StatisticsController.php b/app/Http/Controllers/Manager/StatisticsController.php
index b2cc581..a927136 100644
--- a/app/Http/Controllers/Manager/StatisticsController.php
+++ b/app/Http/Controllers/Manager/StatisticsController.php
@@ -252,7 +252,7 @@ class StatisticsController extends CommonController
         $refund_by_methods = [];
         $refund_methods = (new Refund())->groupBy("payment")->get()->keyBy("payment")->toArray();
         foreach ($refund_methods as $k => $refund_method) {
-            $refund_by_methods[$k] = $model_refund->where("payment", $k)->sum("money");
+            $refund_by_methods[$k] = $model_refund->clone()->where("payment", $k)->sum("money");
         }
 
         $payment_methods = (new Recharge())->payment_methods;