ImportError Traceback (most recent call last)
Cell In[1], line 6
2 from datetime import datetime
4 from vnpy.trader.constant import Interval
----> 6 from elite_optionstrategy import BacktestingEngine
8 from buy_option_strategy import BuyOptionStrategy

File d:\VEIGHN~1\lib\SITE-P~1\elite_optionstrategy__init__.py:19, in <module elite_optionstrategy>()

File d:\VEIGHN~1\lib\SITE-P~1\elite_optionstrategy\backtesting.py:32, in <module elite_optionstrategy.backtesting>()

ImportError: cannot import name 'BarData_' from 'elite_optionstrategy.extension' (d:\VEIGHN~1\lib\SITE-P~1\elite_optionstrategy\extension__init__.py)