core: Problem with connecting to Home Assistant cloud

Home Assistant release with the issue:

0.77.3

Last working Home Assistant release (if known): ???

Operating environment (Hass.io/Docker/Windows/etc.):

RPi 3B with Hassbian

Component/platform:

cloud

Description of problem: After entering cright credentials in Configuration>Home Assistant Cloud, I get an “Unknown error” red message right above “Email” line instead of logging in.

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant):

cloud:

Traceback (if applicable):

Thu Sep 06 2018 23:50:01 GMT+0200 (Central European Summer Time)

Error handling request
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.5/site-packages/aiohttp/web_protocol.py", line 390, in start
    resp = await self._request_handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/aiohttp/web_app.py", line 352, in _handle
    resp = await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/aiohttp/web_middlewares.py", line 106, in impl
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/static.py", line 66, in staticresource_middleware
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/real_ip.py", line 34, in real_ip_middleware
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/ban.py", line 67, in ban_middleware
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/auth.py", line 68, in auth_middleware
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/real_ip.py", line 34, in real_ip_middleware
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/ban.py", line 67, in ban_middleware
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/auth.py", line 68, in auth_middleware
    return await handler(request)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/view.py", line 113, in handle
    result = await result
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/cloud/http_api.py", line 45, in error_handler
    result = await handler(view, request, *args, **kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/http/data_validator.py", line 47, in wrapper
    result = await method(view, request, *args, **kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/cloud/http_api.py", line 102, in post
    data['password'])
  File "/usr/lib/python3.5/asyncio/futures.py", line 380, in __iter__
    yield self  # This tells Task to wait for completion.
  File "/usr/lib/python3.5/asyncio/tasks.py", line 304, in _wakeup
    future.result()
  File "/usr/lib/python3.5/asyncio/futures.py", line 293, in result
    raise self._exception
  File "/usr/lib/python3.5/concurrent/futures/thread.py", line 55, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/cloud/auth_api.py", line 91, in login
    cognito = _authenticate(cloud, email, password)
  File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/components/cloud/auth_api.py", line 126, in _authenticate
    cognito.authenticate(password=password)
  File "/srv/homeassistant/lib/python3.5/site-packages/warrant/__init__.py", line 383, in authenticate
    self.verify_token(tokens['AuthenticationResult']['IdToken'],'id_token','id')
  File "/srv/homeassistant/lib/python3.5/site-packages/warrant/__init__.py", line 197, in verify_token
    kid = jwt.get_unverified_header(token).get('kid')
AttributeError: module 'jose.jwt' has no attribute 'get_unverified_header'

Additional information: