报错信息如下：
0%|▍ | 1/242 [00:00<00:30, 7.86it/s]2025-05-24 07:58:12.374261 触发异常，回测终止
2025-05-24 07:58:12.374261 Traceback (most recent call last):
File "D:\09-vnpy\vnpy_elite_install\lib\site-packages\elite_optionstrategy\backtesting.py", line 187, in run_backtesting
File "D:\09-vnpy\vnpy_elite_install\lib\site-packages\elite_optionstrategy\backtesting.py", line 544, in _run_intraday
File "D:\09-vnpy\vnpy_elite_install\lib\site-packages\elite_optionstrategy\backtesting.py", line 646, in _new_bars
File "E:\02_vnpy\vnpy_PY\vnpy深入解读课程\1691全实战进阶系列 - 精研期权价差策略\课件\test_strategy\10_复合价差优化_zhengshang\集合_02_SR\20250522_单测\buy_option_strategy_shangqi_ag_by_step.py", line 131, in on_bars
portfolio: PortfolioData = self.get_portfolio(self.option_portfolio)
File "D:\09-vnpy\vnpy_elite_install\lib\site-packages\elite_optionstrategy\template.py", line 250, in get_portfolio
KeyError: 'SR_o'
请教一下：无法获取郑商所的期权数据；大商所和上期所却能正常获取，这是怎么回事呢？
