Unable to download OI Data

For my code -
oi_data, ltp, crontime = oi_chain_builder(“NIFTY”)
or
oi_data,ltp,crontime=oi_chain_builder(‘IPCALAB’,‘latest’,‘full’)

I am getting this error:-

KeyError Traceback (most recent call last)
in
1 print(‘Data Analysis is commencing…’)
----> 2 oi_data, ltp, crontime = oi_chain_builder(“NIFTY”)

~\Anaconda3\lib\site-packages\nsepython\rahu.py in oi_chain_builder(symbol, expiry, oi_mode)
147 oi_data = oi_data.append(oi_row, ignore_index=True)
148
→ 149 return oi_data,float(payload[‘records’][‘underlyingValue’]),payload[‘records’][‘timestamp’]
150
151

KeyError: ‘underlyingValue’

It was working till Friday. Can you point out where am I going wrong?
Thanks

NSE hired some bad engineers. Sometimes they make certain keywords disappear. Thats what happened yesterday.

Out of 10 days, 1 day, things will break. It is not your problem. You can solve this by joining NSE and becoming their head and then firing those engineers.