django - サイト マッチング クエリが存在しません。ルックアップ パラメータは {'pk': 3} でした

Question

Environment:

Request Method: GET
Django Version: 1.5
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'allauth',
 'allauth.account',
 'allauth.socialaccount',
 'allauth.socialaccount.providers.facebook',
 'allauth.socialaccount.providers.google',
 'allauth.socialaccount.providers.linkedin',
 'django.contrib.admin',
 'django.contrib.admindocs')


Installed Middleware:

('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')


Traceback:

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  115.                         response = callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py" in view
  68.             return self.dispatch(request, *args, **kwargs)
File "/var/www/sampleapp/allauth/account/views.py" in dispatch
  41.                                                                     **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py" in dispatch
  86.         return handler(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/generic/edit.py" in get
  155.         return self.render_to_response(self.get_context_data(form=form))
File "/var/www/sampleapp/allauth/account/views.py" in get_context_data
  67.                 "site": Site.objects.get_current(),
File "/usr/local/lib/python2.7/dist-packages/django/contrib/sites/models.py" in get_current
  26.             current_site = self.get(pk=sid)
File "/usr/local/lib/python2.7/dist-packages/django/d
b/models/manager.py" in get
  143.         return self.get_query_set().get(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in get
  401.                 (self.model._meta.object_name, kwargs))

Exception Type: DoesNotExist at /accounts/login/
Exception Value: Site matching query does not exist. Lookup parameters were {'pk': 3}

私はdjangoを初めて使用します。この問題を解決するのを手伝ってください?