请问没有行情数据是否导致获取K线超时？

if __name__ == "__main__":
    SYMBOL = "CZCE.RI109"
    #SYMBOL = "SHFE.ru2109"
    api = TqApi(auth="")
    data = api.get_kline_serial(SYMBOL,86400)
    api.close()
    print(data)
 #print(data)

ru2109能够正常运行，RI109就会提示 “获取K线超时”