Not getting LTP for Bank Nifty Options

Hi

I am trying to fetch last traded price for December option of Bank Nifty @strike 29400 using following URL:

https://api.kite.trade/quote/ltp?i=NFO:10202114

But I am getting an empty JSON structure which has no information, just some curly braces and double quotes.
Please help.

Thanks,
Himanshu.