09:43:17 初始化CTA回测引擎
09:43:17 策略文件加载完成
09:43:22 ----------------------------------------
09:43:22 IF88.CFFEX-1m开始下载历史数据
09:43:32
数据下载失败，触发异常：
Traceback (most recent call last):
File "d:\Python\Python311\Lib\site-packages\vnpy_ctabacktester\engine.py", line 427, in run_downloading
bar_data = self.datafeed.query_bar_history(req, self.write_log)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "d:\Python\Python311\Lib\site-packages\vnpy_tqsdk\tqsdk_datafeed.py", line 49, in query_bar_history
df: DataFrame = api.get_kline_data_series(
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "d:\Python\Python311\Lib\site-packages\tqsdk\api.py", line 915, in get_kline_data_series
return self._get_data_series("get_kline_data_series", symbol, duration_seconds, start_dt, end_dt, adj_type)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "d:\Python\Python311\Lib\site-packages\tqsdk\api.py", line 995, in _get_data_series
self._ensure_symbol(symbol_list) # 检查合约代码是否存在
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "d:\Python\Python311\Lib\site-packages\tqsdk\api.py", line 521, in _ensure_symbol
if not self.wait_update(deadline=deadline, _task=task):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "d:\Python\Python311\Lib\site-packages\tqsdk\api.py", line 1907, in wait_update
return self._wait_update(deadline=deadline, _task=_task)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "d:\Python\Python311\Lib\site-packages\tqsdk\api.py", line 1937, in _wait_update
self._run_until_task_done(task=update_task, deadline=deadline)
File "d:\Python\Python311\Lib\site-packages\tqsdk\baseApi.py", line 114, in _run_until_task_done
self._run_once()
File "d:\Python\Python311\Lib\site-packages\tqsdk\baseApi.py", line 83, in _run_once
raise self._exceptions.pop(0)
File "d:\Python\Python311\Lib\site-packages\tqsdk\symbols.py", line 45, in _run
raise Exception(f"查询合约服务报错 {query_result['error']}") from None
Exception: 查询合约服务报错 failed to execute graphql operation, errors: [variable instrument_id: [CFFEX.IF88] contains non-existent instrument: CFFEX.IF88]
求助大佬，这是啥问题呢，小白
