- weixin msg added.

- elm sometimes have no delivery msg
- elm sometimes delivery msg arrvied before finished pickup
- the gap between finished pickup and first delivery msg is big

business/scheduler/scheduler.go

@@ -15,6 +15,8 @@ var (
 var (
 	ErrStatusIsNotOKForOperation     = errors.New("当前状态操作无效")
 	ErrCanNotCreateAtLeastOneWaybill = errors.New("一个运单都不能创建")
+	ErrCanNotFindOrder               = errors.New("不能找到订单（一般是由于事件错序）")
+	ErrCanNotFindWaybill             = errors.New("不能找到运单（一般是由于事件错序）")
 )
 
 type StatusActionConfig struct {