请教一下，api.query_options(underlying,expired=False) 在查碳酸锂GFEX.lc2601的时候为什么有时候会超时

这个报错其他合约没出现过，但碳酸锂有时候会出现，有时候没有，

File D:\python\project\.venv\Lib\site-packages\tqsdk\api.py:2721, in TqApi.query_options(self, underlying_symbol, option_class, exercise_year, exercise_month, strike_price, expired, has_A, **kwargs)
2718 options.append(option[“instrument_id”])
2719 return options
-> 2721 return self._get_symbol_list(query=query, filter=filter)

File D:\python\project\.venv\Lib\site-packages\tqsdk\api.py:2561, in TqApi._get_symbol_list(self, query, filter)
2559 while not result._task.done():
2560 if not self.wait_update(deadline=deadline, _task=result._task):
-> 2561 raise TqTimeoutError(f”查询合约服务 {query} 超时，请检查客户端及网络是否正常”)
2562 return result

TqTimeoutError: 查询合约服务 query {
multi_symbol_info(instrument_id: [“GFEX.lc2601”]) {
__typename
… on basic {
instrument_id
derivatives(class: [OPTION]) {
edges {
node {
__typename
… on basic {
class
instrument_id
exchange_id
english_name
}
… on option {
expired
expire_datetime
last_exercise_datetime
strike_price
call_or_put
}
}
}
}
}
}