refund

app/Http/Controllers/Admin/Order/InfoController.php

@@ -247,7 +247,7 @@ class InfoController extends Controller
         $config = [
             // 必要配置
             'app_id' => $settinig->app_id,
-            'mch_id' => $settinig->mach_id,
+            'mch_id' => $settinig->mch_id,
             'key' => $settinig->api_key,   // API 密钥
 
             // 如需使用敏感接口（如退款、发送红包等）需要配置 API 证书路径(登录商户平台下载 API 证书)