Unable to authenticate

[jokerigno]

hi,

I've tried to use you google assistant webserver addon but it seems to be broken. There are a bunch of guys which have the same issue so maybe it's not only for me.

This is still supported?

[GTStan]

Hi, sample problem here.
My HA version is 0.99.3 on Raspberry Pi 4. Here are the error messages I got after clicking the "connect" button on the authentication page.

500 Internal Server Error
The server encountered an unexpected condition which prevented it from fulfilling the request.

Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/cherrypy/_cprequest.py", line 627, in respond
self._do_respond(path_info)
File "/usr/local/lib/python3.5/dist-packages/cherrypy/_cprequest.py", line 686, in _do_respond
response.body = self.handler()
File "/usr/local/lib/python3.5/dist-packages/cherrypy/lib/encoding.py", line 221, in call
self.body = self.oldhandler(*args, **kwargs)
File "/usr/local/lib/python3.5/dist-packages/cherrypy/_cpdispatch.py", line 54, in call
return self.callable(*self.args, **self.kwargs)
File "/hassio_oauth.py", line 46, in token
self.oauth2.fetch_token(self.user_data['token_uri'], client_secret=self.user_data['client_secret'], code=token)
File "/usr/local/lib/python3.5/dist-packages/requests_oauthlib/oauth2_session.py", line 244, in fetch_token
self._client.parse_request_body_response(r.text, scope=self.scope)
File "/usr/local/lib/python3.5/dist-packages/oauthlib/oauth2/rfc6749/clients/base.py", line 411, in parse_request_body_response
self.token = parse_token_response(body, scope=scope)
File "/usr/local/lib/python3.5/dist-packages/oauthlib/oauth2/rfc6749/parameters.py", line 379, in parse_token_response
validate_token_parameters(params)
File "/usr/local/lib/python3.5/dist-packages/oauthlib/oauth2/rfc6749/parameters.py", line 386, in validate_token_parameters
raise_from_error(params.get('error'), params)
File "/usr/local/lib/python3.5/dist-packages/oauthlib/oauth2/rfc6749/errors.py", line 415, in raise_from_error
raise cls(**kwargs)
oauthlib.oauth2.rfc6749.errors.InvalidGrantError: (invalid_grant) Bad Request
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[happycgi2]

@GTStan same problem on Raspberry Pi 4.