Traceback (most recent call last):
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/flask/app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/flask/app.py", line 1641, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/flask/app.py", line 1544, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/flask/app.py", line 1639, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/flask/app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/firetactoe.py", line 256, in main_page
    _send_firebase_message(channel_id, message=game.to_json())
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/firetactoe.py", line 98, in _send_firebase_message
    return _get_http().request(url, 'PATCH', body=message)
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/functools32/functools32.py", line 400, in wrapper
    result = user_function(*args, **kwds)
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/firetactoe.py", line 83, in _get_http
    creds = GoogleCredentials.get_application_default().create_scoped(
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/oauth2client/client.py", line 1264, in get_application_default
    return GoogleCredentials._get_implicit_credentials()
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/oauth2client/client.py", line 1249, in _get_implicit_credentials
    credentials = checker()
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/oauth2client/client.py", line 1202, in _implicit_credentials_from_files
    credentials_filename = _get_well_known_file()
  File "/home/developer/tmp/firebase/python-docs-samples/appengine/standard/firebase/firetactoe/lib/oauth2client/client.py", line 1368, in _get_well_known_file
    default_config_dir = os.path.join(os.path.expanduser('~'),
  File "/usr/lib/python2.7/posixpath.py", line 261, in expanduser
    import pwd
  File "/opt/google_appengine/google/appengine/tools/devappserver2/python/sandbox.py", line 963, in load_module
    raise ImportError('No module named %s' % fullname)
ImportError: No module named pwd
INFO     2016-10-31 06:15:14,874 module.py:788] default: "GET / HTTP/1.1" 500 291