Cebu API javascript client Invalid Input Error

I was trying to make an API client for Zebu. I am getting “Invalid Input” and unable to figure out what is the reason for this error. My code is almost verbatim copy of what is prescribed in the zebull api documentation. Kindly help resolve this ASAP, please.

I never thought Zebu as a good broker. It is established by the another broker of Aliceblue’s director after an apparent family tussle? They seem to copy Alice’s frameworks i.e. designs and approaches like Fyers copies Zerodha and Upstox.

What is the extra benefit of Zebu. I don’t think I will explore their API of them as of moment.

And why you are using their method

Just do a wrapper breaking the main URL? It looks straight forward.