Gitlab-ce cannot login after upgrade to 12.10
Existing login sessions working fine, however whenever user logs out and then attempts to log in again 500 error is displayed.
Here is the traceback from production.log
Completed 500 Internal Server Error in 1716ms (ActiveRecord: 100.8ms | Elasticsearch: 0.0ms | Allocations: 136062)
ActionView::Template::Error (undefined method `include?' for nil:NilClass):
38: %hr.footer-fixed
39: .container.footer-container
40: .footer-links
41: - if !public_visibility_restricted?
42: = link_to _("Explore"), explore_root_path
43: = link_to _("Help"), help_path
44: = link_to _("About GitLab"), "https://about.gitlab.com/"
app/helpers/explore_helper.rb:55:in `public_visibility_restricted?'
app/views/layouts/devise.html.haml:41
app/controllers/application_controller.rb:125:in `render'
app/controllers/sessions_controller.rb:50:in `new'
app/controllers/application_controller.rb:479:in `set_current_admin'
lib/gitlab/session.rb:11:in `with_session'
app/controllers/application_controller.rb:470:in `set_session_storage'
lib/gitlab/i18n.rb:55:in `with_locale'
lib/gitlab/i18n.rb:61:in `with_user_locale'
app/controllers/application_controller.rb:464:in `set_locale'
lib/gitlab/error_tracking.rb:48:in `with_context'
app/controllers/application_controller.rb:559:in `sentry_context'
lib/gitlab/application_context.rb:52:in `block in use'
lib/gitlab/application_context.rb:52:in `use'
lib/gitlab/application_context.rb:20:in `with_context'
app/controllers/application_controller.rb:455:in `set_current_context'
lib/gitlab/request_profiler/middleware.rb:17:in `call'
lib/gitlab/middleware/go.rb:20:in `call'
lib/gitlab/etag_caching/middleware.rb:13:in `call'
lib/gitlab/middleware/multipart.rb:122:in `call'
lib/gitlab/middleware/read_only/controller.rb:53:in `call'
lib/gitlab/middleware/read_only.rb:18:in `call'
lib/gitlab/middleware/same_site_cookies.rb:27:in `call'
lib/gitlab/middleware/basic_health_check.rb:25:in `call'
lib/gitlab/middleware/request_context.rb:23:in `call'
config/initializers/fix_local_cache_middleware.rb:9:in `call'
lib/gitlab/metrics/requests_rack_middleware.rb:60:in `call'
lib/gitlab/middleware/release_env.rb:12:in `call'