Django OAuth2错误：当提供client_id时，invalid_client和client_id = None

我正在使用django-social-auth为我的django项目进行谷歌应用认证 . 我从我的域名的Google api控制台获取了客户端ID和密钥 . 并在我的应用程序中插入值如下：

**settings.py**

      MIDDLEWARE_CLASSES = (
      'social_auth.middleware.SocialAuthExceptionMiddleware',
      )

     LOGIN_URL = '/login/google-oauth2/'
     LOGIN_REDIRECT_URL = '/profile'
     LOGIN_ERROR_URL = '/login-error/'

     AUTHENTICATION_BACKENDS = (
      'social_auth.backends.google.GoogleOAuth2Backend',
      'django.contrib.auth.backends.ModelBackend',
     )

    TEMPLATE_CONTEXT_PROCESSORS = (
     "django.contrib.auth.context_processors.auth",
     "social_auth.context_processors.social_auth_by_type_backends",
    )

    SOCIAL_AUTH_ENABLED_BACKENDS = ('google',)
    SOCIAL_AUTH_DEFAULT_USERNAME = 'new_social_auth_user'

    GOOGLE_OAUTH2_CLIENT_ID = '***.apps.googleusercontent.com'
    GOOGLE_OAUTH2_CLIENT_SECRET = '****'
    GOOGLE_WHITE_LISTED_DOMAINS = ['127.0.0.1:8000']

    SOCIAL_AUTH_COMPLETE_URL_NAME  = 'socialauth_complete'
    SOCIAL_AUTH_ASSOCIATE_URL_NAME = 'socialauth_associate_complete'
    SOCIAL_AUTH_RAISE_EXCEPTIONS = False
    SOCIAL_AUTH_PROCESS_EXCEPTIONS = 'social_auth.utils.log_exceptions_to_messages'  

    INSTALLED_APPS = (
            'social_auth', )

...

**urls.py**

     from django.conf.urls import patterns, include, url
     from django.contrib import admin
     from django.views.generic import TemplateView
     from django.contrib.auth.views import logout
     admin.autodiscover()

     urlpatterns = patterns('',

     url(r'^admin/', include(admin.site.urls)),
     url(r'', include('social_auth.urls')),
     url(r'^$', TemplateView.as_view(template_name="login.html")),                 
     url(r'^logout/$', logout, {'next_page': '/'}, name='gauth_logout'),
     url(r'^profile/$', TemplateView.as_view(template_name="profile.html")),
     )

...

**login.html**

     <p>Use your work email credentials to sign in to this application: 
     <a href="{% url 'socialauth_begin' 'google-oauth2' %}">Sign In</a>
      </p>

问题是当我点击登录时，我被重定向到错误：Invalid_client页面，其中包含详细信息：

Request Details
      cookie_policy_enforce=false
      scope=https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile
      response_type=code
      redirect_uri=http://127.0.0.1:8000/complete/google-oauth2/
      state=WZWyJgDRfeW4RneRynqSZ3nSy0Bzs0v6
      client_id=None

https://accounts.google.com/o/oauth2/auth?scope=https://www.googleapis.com/auth/userinfo.email+https://www.googleapis.com/auth/userinfo.profile&state=WZWyJgDRfeW4RneRynqSZ3nSy0Bzs0v6&redirect_uri=http://127.0.0.1:8000/complete/google-oauth2/&response_type=code&client_id=None

即使我在我的项目中提供了正确的client_id，该页面（并且可以从url中看到）表示它尚未提供 . 如果我在网址中手动插入，我会被重定向到权限页面 .

此外，当我接受权限时，我收到 AuthCanceled at /complete/google-oauth2/ 错误 . 是不是我的项目没有正确读取social_auth设置？

任何帮助，将不胜感激 . 谢谢 .