I am getting the error while doing the login from the API:

---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
Cell In[20], line 4
2 obj=SmartConnect(api_key=apikey)
3 data = obj.generateSession(username,pwd,pyotp.TOTP(token).now())
----> 4 refreshToken= data['data']['refreshToken']
5 res = obj.getProfile(refreshToeken)
6 res['data']['exchanges']

TypeError: 'NoneType' object is not subscriptable

Please help to sort this.