What is your version of OpenStack? And what's your version of installed Django?
In recent, Horizon stopped the support for pre-Django 1.8. (https://github.com/openstack/horizon/commit/83c9e3fead4236e8e958342f29954b27bbb9f0c3)
In this commit, the statement related with the middleware package "django.contrib.auth.middleware.SessionAuthenticationMiddleware" was changed. (https://github.com/openstack/horizon/commit/83c9e3fead4236e8e958342f29954b27bbb9f0c3#diff-248bcf607a01db20371e0433315e2987L81)
What is your version of OpenStack?
And what's your version of installed Django?
In recent, Horizon stopped the support for pre-Django 1.8. /github. com/openstack/ horizon/ commit/ 83c9e3fead4236e 8e958342f29954b 27bbb9f0c3)
(https:/
In this commit, the statement related with the middleware package "django. contrib. auth.middleware .SessionAuthent icationMiddlewa re" was changed. /github. com/openstack/ horizon/ commit/ 83c9e3fead4236e 8e958342f29954b 27bbb9f0c3# diff-248bcf607a 01db20371e04333 15e2987L81)
(https:/