Oi_chain_builder isn't working on stocks

This function seems to only be working for NIFTY and BANKNIFTY. However, the minute you try using it for stocks, it throws up errors. Once in a while, it works for a couple of stocks. Can someone help?

try nsepythonserver library for once and let me know if problem persists.

I fetch all NFO stocks and calculate their OI in each 10 mins interval as you can see here https://unofficed.com/leverage/nse-stock-options/

But I use the server version. That works correctly as of now.