@abhisingh1891 change websocket url it works

@PandaTrade Still not working

Iam going step by step firstly i just want to execute a single BANKNIFTY options order of any strike price for example i've taken BANKNIFTY 22 APR 2021 PE (Weekly contract).
I think i did everything right but why it is throwing this error.
I'am working on PYTHON with Jupyter Notebook, iam attaching a screenshot please guys help me out.
And yes upper code is correct because i executed SBI-eq order successfully, the problem is in the orderparams.