我封装了一下tqsdk，然后就一直报debug，应该是klines报的。我想请问一下是为什么

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DEBUG:TqApi:websocket message received from wss://openmd.shinnytech.com/t/md/front/mobile: {“aid”:”rtn_data”,”data”:[{“klines”:{“SHFE.rb2001”:{“60000000000”:{“data”:{“69732”:{“datetime”:1574172720000000000,”open”:3663.000,”high”:3666.000,”low”:3662.000,”close”:3664.000,”volume”:20862,”open_oi”:3101098,”close_oi”:3102496}}}}}},{“charts”:{“PYSDK_realtime_564edda766e89964f652191e06d9ba08”:{“more_data”:false}},”mdhis_more_data”:false}
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DEBUG:TqApi:websocket message sent to wss://openmd.shinnytech.com/t/md/front/mobile: {“aid”: “peek_message”}
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