TypeError: 'NoneType' object is not subscriptable

[Anvesh Raja]

Hello admin,
I have recently opened an account in Angel one broking. While, attempting to use python api for my purpose I am getting this error eventhough I have given all the inputs like, username, password and apikey. The error is from the below code.

data = obj.generateSession(Id,pwd)
refreshToken= data['data']['refreshToken']

Quick help is appreciated. Thank you!

[Anvesh Raja]

@PandaTrade Hello!
Thanks for the reply. I have put that in the while true loop still the problem exist. Is there any other way?

[PandaTrade]

@Anvesh-Raja There must be a login problem.
Keep this code in a always true loop.