跨境商品查询bugfix

common/models/forms/ApproachOrderForm.php

@@ -147,7 +147,7 @@ class ApproachOrderForm extends Model
         $parentValidate = parent::beforeValidate();
         if ($this->sn) {
             $this->_model = ApproachOrder::findOne(['SN'=>$this->sn]);
-            if (!$this->_model->toArray()){
+            if (!ApproachOrder::findOneAsArray('SN = :SN', [':SN' => $this->sn])){
                 $this->addError('sn', '订单不存在');
                 return false;
             }