 [Fix]close #1569
 [Fix]close #1569

msincenselee/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,msincenselee/vnpy,bigdig/vnpy,andrewchenshx/vnpy,andrewchenshx/vnpy,andrewchenshx/vnpy,bigdig/vnpy,bigdig/vnpy,bigdig/vnpy,msincenselee/vnpy,vnpy/vnpy,andrewchenshx/vnpy,vnpy/vnpy