robloxlib.valid_login() doesn't work

[AceKiron]

I want to make a program where you can login to your roblox account. But when I use this code:

import robloxlib

robloxlib.valid_login("CENSORED","CENSORED")

It says TypeError: 'NoneType' object is not subscriptable at form['username'].value = uname.
Please tell me how I can fix this or upload an better version of robloxlib

[AceKiron]

Somebody please answer