python-social-auth: How to solve Authentication process canceled error?

Now I try to setup python-social-app

In facebook login after the username/password redirect to error page I don’t know why this happen…

In my setting I have ‘social.backends.facebook.FacebookOAuth2’ and I correctly set SOCIAL_AUTH_FACEBOOK_KEY and Secret so Really where to look the error.?

The thing is i didn’t cancel anything …!

Request Method: GET
Request URL: http://website.com:8000/complete/facebook/?redirect_state=IuQDEiyX2bbS8Uhk7MR3hpRFLNZlW2Y5&code=AQDH5kqBibfy9bi21M9tTieujRAqvJVYdAb2UPFvfH6DVXoCWrrtamRA99Ze5-6cC6qHPiNq-a3XbGh2Gg4pbdFfM4OTpCEpWkPID6SZrHfAoEan8Q68cV17LDgsryX_M45QoXd0knpbE0x-QwAPwdoFmKQGHLw7xomCHeN5pCtrWhtoYQIrsFE1UQZZaxt4qtLzAmfmCRjDO7Et_S75fngLiomM0PfevTChLbHJHMYaqy6DBkgGZqZK-bXrqLaNFnBEoZ3M956DwCg4ZtTnvxulR4sXH9ZV3IoxVhL0JxMVsGnT2H_0wdKujIDPKcdPKZc&state=IuQDEiyX2bbS8Uhk7MR3hpRFLNZlW2Y5

Django Version: 1.8.3
Python Version: 2.7.6
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'frontend',
 'social.apps.django_app.default')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware')


Traceback:
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
  57.         response = view_func(request, *args, **kwargs)
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view
  58.         return view_func(*args, **kwargs)
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/social/apps/django_app/utils.py" in wrapper
  51.             return func(request, backend, *args, **kwargs)
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/social/apps/django_app/views.py" in complete
  28.                        redirect_name=REDIRECT_FIELD_NAME, *args, **kwargs)
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/social/actions.py" in do_complete
  43.         user = backend.complete(user=user, *args, **kwargs)
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/social/backends/base.py" in complete
  41.         return self.auth_complete(*args, **kwargs)
File "/Users/simon/Freelancer/env/lib/python2.7/site-packages/social/utils.py" in wrapper
  232.                 raise AuthCanceled(args[0])

Exception Type: AuthCanceled at /complete/facebook/
Exception Value: Authentication process canceled

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