gx修复报错信息

@@ -463,7 +463,7 @@ class ProductLogic extends  BaseLogic
      */
     public function copyExtendInfo($old_id,$new_id){
         $extendInfoModel = new ExtendInfo();
-        $extendList = $extendInfoModel->list(['product_id'=>$old_id]);
+        $extendList = $extendInfoModel->list(['product_id'=>$old_id],'created_at');
         if(!empty($extendList)){
             foreach ($extendList as $k => $v){
                 unset($v['id']);