Problem in code provided in advanced volatility course

the code in Advanced Options Volatility Trading: Strategies and Risk Management- Short Straddle-Forecasted IV-Section 21, Unit 12–> is giving error because the options_data has no [‘ATM’] column

Hi Gaurav,

The notebook seems to be working fine. Can you let us know if you are running the notebook from the portal or have you downloaded the notebook. This will help us resolve any issues.