Аутентификация в Wirecloud через KeyRock

Я установил Wirecloud и экземпляр KeyRock на своих серверах. Теперь я хочу включить аутентификацию в Wirecloud через KeyRock, как описано здесь: Интеграция с IdM-GE

После выполнения описанных шагов при открытии <wirecloud_server>/login я попадаю на экран входа в систему KeyStone. При входе в систему меня просят авторизовать приложение и перенаправить на <wirecloud_server>/complete/fiware/?state=<state_token>&code=<code_token>, но там я получаю только ошибку 500.

Журнал Horizon (KeyRock-Frontend), а также журнал Wirecloud не отображают никаких ошибок, и поэтому я понятия не имею, в чем может быть проблема.

EDIT1: я изменил ведение журнала на отладку, и теперь я получаю следующее сообщение в браузере:

Environment:


Request Method: GET
Request URL: https://<wirecloud_server>/complete/fiware/?state=LhCRZqqOaB57Lo8kyYxhk5zWJBhTRshi&code=JH3mwLCmnBx19kZwtPoqNm1Gl4eIpv

Django Version: 1.6.11
Python Version: 2.7.9
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'wirecloud.commons',
 'wirecloud.defaulttheme',
 'compressor',
 'south',
 'wirecloud.catalogue',
 'wirecloud.platform',
 'wirecloud.fiware',
 'social.apps.django_app.default')
Installed Middleware:
('wirecloud.commons.middleware.URLMiddleware',)


Traceback:
File "/usr/local/venv/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  112.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
  52.         response = view_func(request, *args, **kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/django/views/decorators/csrf.py" in wrapped_view
  57.         return view_func(*args, **kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/social/apps/django_app/utils.py" in wrapper
  51.             return func(request, backend, *args, **kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/social/apps/django_app/views.py" in complete
  28.                        redirect_name=REDIRECT_FIELD_NAME, *args, **kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/social/actions.py" in do_complete
  43.         user = backend.complete(user=user, *args, **kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/social/backends/base.py" in complete
  41.         return self.auth_complete(*args, **kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/social/utils.py" in wrapper
  229.             return func(*args, **kwargs)
File "/usr/local/venv/lib/python2.7/site-packages/social/backends/oauth.py" in auth_complete
  375.         state = self.validate_state()
File "/usr/local/venv/lib/python2.7/site-packages/social/backends/oauth.py" in validate_state
  88.             raise AuthStateMissing(self, 'state')

Exception Type: AuthStateMissing at /complete/fiware/
Exception Value: Session value state missing.

В журнале Apache для моего виртуального хоста wirecloud указано следующее:

[Wed Jan 27 07:40:40.707138 2016] [wsgi:error] [pid 22571:tid 139868295030528] Internal Server Error: /complete/fiware/
[Wed Jan 27 07:40:40.707165 2016] [wsgi:error] [pid 22571:tid 139868295030528] Traceback (most recent call last):
[Wed Jan 27 07:40:40.707167 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/django/core/handlers/base.py", line 112, in get_response
[Wed Jan 27 07:40:40.707169 2016] [wsgi:error] [pid 22571:tid 139868295030528]     response = wrapped_callback(request, *callback_args, **callback_kwargs)
[Wed Jan 27 07:40:40.707171 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/django/views/decorators/cache.py", line 52, in _wrapped_view_func
[Wed Jan 27 07:40:40.707173 2016] [wsgi:error] [pid 22571:tid 139868295030528]     response = view_func(request, *args, **kwargs)
[Wed Jan 27 07:40:40.707175 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 57, in wrapped_view
[Wed Jan 27 07:40:40.707177 2016] [wsgi:error] [pid 22571:tid 139868295030528]     return view_func(*args, **kwargs)
[Wed Jan 27 07:40:40.707179 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/social/apps/django_app/utils.py", line 51, in wrapper
[Wed Jan 27 07:40:40.707181 2016] [wsgi:error] [pid 22571:tid 139868295030528]     return func(request, backend, *args, **kwargs)
[Wed Jan 27 07:40:40.707183 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/social/apps/django_app/views.py", line 28, in complete
[Wed Jan 27 07:40:40.707185 2016] [wsgi:error] [pid 22571:tid 139868295030528]     redirect_name=REDIRECT_FIELD_NAME, *args, **kwargs)
[Wed Jan 27 07:40:40.707187 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/social/actions.py", line 43, in do_complete
[Wed Jan 27 07:40:40.707189 2016] [wsgi:error] [pid 22571:tid 139868295030528]     user = backend.complete(user=user, *args, **kwargs)
[Wed Jan 27 07:40:40.707191 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/social/backends/base.py", line 41, in complete
[Wed Jan 27 07:40:40.707204 2016] [wsgi:error] [pid 22571:tid 139868295030528]     return self.auth_complete(*args, **kwargs)
[Wed Jan 27 07:40:40.707206 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/social/utils.py", line 229, in wrapper
[Wed Jan 27 07:40:40.707208 2016] [wsgi:error] [pid 22571:tid 139868295030528]     return func(*args, **kwargs)
[Wed Jan 27 07:40:40.707210 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/social/backends/oauth.py", line 375, in auth_complete
[Wed Jan 27 07:40:40.707212 2016] [wsgi:error] [pid 22571:tid 139868295030528]     state = self.validate_state()
[Wed Jan 27 07:40:40.707213 2016] [wsgi:error] [pid 22571:tid 139868295030528]   File "/usr/local/venv/lib/python2.7/site-packages/social/backends/oauth.py", line 88, in validate_state
[Wed Jan 27 07:40:40.707215 2016] [wsgi:error] [pid 22571:tid 139868295030528]     raise AuthStateMissing(self, 'state')
[Wed Jan 27 07:40:40.707217 2016] [wsgi:error] [pid 22571:tid 139868295030528] AuthStateMissing: Session value state missing.

Журнал горизонта показывает следующее:

[Wed Jan 27 06:40:37.975296 2016] [wsgi:error] [pid 22572:tid 139868395742976] Login successful for user "idm".
[Wed Jan 27 06:40:38.089251 2016] [wsgi:error] [pid 22572:tid 139868362172160] DEBUG:idm_logger:Requesting authorization for application: 449efdc7913f434ea6e81ed49b1669e4 with redirect_uri: https://<wirecloud_server>/complete/fiware/         and scope: ['all_info'] by user idm
[Wed Jan 27 06:40:38.122259 2016] [wsgi:error] [pid 22572:tid 139868362172160] DEBUG:idm_logger:OAUTH2: Application 449efdc7913f434ea6e81ed49b1669e4 NOT alreadyauthorized
[Wed Jan 27 06:40:40.574809 2016] [wsgi:error] [pid 22572:tid 139868395742976] DEBUG:idm_logger:Authorizing application: 449efdc7913f434ea6e81ed49b1669e4 by user: idm
[Wed Jan 27 06:40:40.596301 2016] [wsgi:error] [pid 22572:tid 139868395742976] DEBUG:idm_logger:OAUTH2: Authorization Code obtained JH3mwLCmnBx19kZwtPoqNm1Gl4eIpv
[Wed Jan 27 06:40:40.596382 2016] [wsgi:error] [pid 22572:tid 139868395742976] DEBUG:idm_logger:OAUTH2: Redirecting user back to https://<wirecloud_server>/complete/fiware/?state=LhCRZqqOaB57Lo8kyYxhk5zWJBhTRshi&code=JH3mwLCmnBx19kZwtPoqNm1Gl4eIpv