问我正在尝试使用Django制作“使用facebook登录”。获取误差

EN

INSTALLED_APPS = [

    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'social_django',
    'dashboard'
]


MIDDLEWARE = [

    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'social_django.middleware.SocialAuthExceptionMiddleware',
]


TEMPLATES = [

    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(os.path.join(BASE_DIR), 'templates')],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
                'social_django.context_processors.backends',  # <--
                'social_django.context_processors.login_redirect',
            ],
        },
    },
]


AUTHENTICATION_BACKENDS = (

    'social_core.backends.facebook.FacebookOAuth2',
    'social_core.backends.google.GoogleOAuth2',
    'django.contrib.auth.backends.ModelBackend',
)


STATIC_URL = '/static/'

LOGIN_URL = '/demo/login/'

LOGIN_REDIRECT_URL = '/'

SOCIAL_AUTH_FACEBOOK_KEY = '184354188769721'
SOCIAL_AUTH_FACEBOOK_SECRET = 'c4d9ed712a59be2f9bb25b5368432f61'

LOGIN_URL = '/demo/login/'

LOGIN_REDIRECT_URL = '/'

url(r'^facebook/', include('social_django.urls', namespace='social')),

<a href="{% url 'social:begin' 'facebook' %}">Login with Facebook</a>