change

app/Http/Controllers/QuickApp/Order/OrdersController.php

@@ -510,8 +510,11 @@ class OrdersController extends BaseController
             // 针对聚裕的包无法支付的问题（注册时传入了仙女阅读的包名，导致支付时取的支付信息不一致）
             $package = $request->header('x-package', '');
             if ($package === 'com.juyu.kuaiying.rmyq') {
-                $packageInfo               = QappPackage::getPackageByPackage($package);
-                $params['pay_merchant_id'] = getProp($packageInfo, 'app_pay_merchat_id');
+                $packageInfo   = QappPackage::getPackageByPackage($package);
+                $payMerchantId = getProp($packageInfo, 'app_pay_merchat_id');
+                if ($payMerchantId) {
+                    $params['pay_merchant_id'] = $payMerchantId;
+                }
             }
 
         } else {