I have a error in kilo horizon. In juno all works fine:

[Tue Jul 14 14:23:18.820391 2015] [:error] [pid 3542] Login successful for user "demo".
[Tue Jul 14 14:23:18.821302 2015] [:error] [pid 3542] Internal Server Error: /dashboard/auth/login/
[Tue Jul 14 14:23:18.821315 2015] [:error] [pid 3542] Traceback (most recent call last):
[Tue Jul 14 14:23:18.821319 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response
[Tue Jul 14 14:23:18.821323 2015] [:error] [pid 3542]     response = wrapped_callback(request, *callback_args, **callback_kwargs)
[Tue Jul 14 14:23:18.821326 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/views/decorators/debug.py", line 76, in sensitive_post_parameters_wrapper
[Tue Jul 14 14:23:18.821330 2015] [:error] [pid 3542]     return view(request, *args, **kwargs)
[Tue Jul 14 14:23:18.821333 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/utils/decorators.py", line 110, in _wrapped_view
[Tue Jul 14 14:23:18.821337 2015] [:error] [pid 3542]     response = view_func(request, *args, **kwargs)
[Tue Jul 14 14:23:18.821340 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/views/decorators/cache.py", line 57, in _wrapped_view_func
[Tue Jul 14 14:23:18.821343 2015] [:error] [pid 3542]     response = view_func(request, *args, **kwargs)
[Tue Jul 14 14:23:18.821347 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/openstack_auth/views.py", line 111, in login
[Tue Jul 14 14:23:18.821350 2015] [:error] [pid 3542]     **kwargs)
[Tue Jul 14 14:23:18.821353 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/views/decorators/debug.py", line 76, in sensitive_post_parameters_wrapper
[Tue Jul 14 14:23:18.821356 2015] [:error] [pid 3542]     return view(request, *args, **kwargs)
[Tue Jul 14 14:23:18.821359 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/utils/decorators.py", line 110, in _wrapped_view
[Tue Jul 14 14:23:18.821363 2015] [:error] [pid 3542]     response = view_func(request, *args, **kwargs)
[Tue Jul 14 14:23:18.821366 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/views/decorators/cache.py", line 57, in _wrapped_view_func
[Tue Jul 14 14:23:18.821369 2015] [:error] [pid 3542]     response = view_func(request, *args, **kwargs)
[Tue Jul 14 14:23:18.821372 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/contrib/auth/views.py", line 51, in login
[Tue Jul 14 14:23:18.821375 2015] [:error] [pid 3542]     auth_login(request, form.get_user())
[Tue Jul 14 14:23:18.821378 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/contrib/auth/__init__.py", line 102, in login
[Tue Jul 14 14:23:18.821381 2015] [:error] [pid 3542]     if _get_user_session_key(request) != user.pk or (
[Tue Jul 14 14:23:18.821384 2015] [:error] [pid 3542]   File "/usr/lib/python2.7/site-packages/django/contrib/auth/__init__.py", line 59, in _get_user_session_key
[Tue ...