Error while login

## Description of the problem
login fails , i am using fresh install using pip.

## Code to reproduce
```py
#Settings:
mail=""
pwd=""
from fbchat import Client
from fbchat.models import *

import pickle
import logging
logging.basicConfig(filename='logFF.log', level=logging.DEBUG)
logging.info('Authenticating..')
client = Client(mail, pwd)
#client = Bot(mail, pwd, session_cookies=session_cookies)
logging.info('Retrieving session cookies')
'''session_cookies = client.getSession()
with open('session.pickle','wb') as f:
pickle.dump(session_cookies,f)'''
#client.setSession(session_cookies)
#client.listen()
print(client.uid)
client.logout()
```

## Traceback
```
Logging in
Attempt #1 failed, retrying
Traceback (most recent call last):
File "C:\Users\princ\AppData\Local\Programs\Python\Python37\lib\site-packages\fbchat\_client.py", line 209, in login
user_agent=user_agent,
File "C:\Users\princ\AppData\Local\Programs\Python\Python37\lib\site-packages\fbchat\_state.py", line 151, in login
return cls.from_session(session=session)
File "C:\Users\princ\AppData\Local\Programs\Python\Python37\lib\site-packages\fbchat\_state.py", line 190, in from_session
revision = int(r.text.split('"client_revision":', 1)[1].split(",", 1)[0])
IndexError: list index out of range
```

## Environment information
- Python 3.7
- fbchat 1.9.7
- windows 10

I couldn't find useful info about my problem.