When attempting to connect /gitlab/admin/application_settings page from admin area the following error is produced [production.log]:
Started GET "/gitlab/admin/application_settings" for <API URL> at 2018-06-16 19:29:24 +0000
Processing by Admin::ApplicationSettingsController#show as HTML
Completed 500 Internal Server Error in 11ms (ActiveRecord: 1.3ms)
ActionView::Template::Error (First argument in form cannot contain nil or be empty):
1: = form_for @application_setting, url: admin_application_settings_path, html: { class: 'fieldset-form' } do |f|
2: = form_errors(@application_setting)
3:
4: %fieldset
app/views/admin/application_settings/_visibility_and_access.html.haml:1:in `_app_views_admin_application_settings__visibility_and_access_html_haml___3591089777756656369_47400957548000'
app/views/admin/application_settings/show.html.haml:15:in `_app_views_admin_application_settings_show_html_haml__337089356688845664_47400870709080'
lib/gitlab/i18n.rb:50:in `with_locale'
lib/gitlab/i18n.rb:56:in `with_user_locale'
app/controllers/application_controller.rb:362:in `set_locale'
lib/gitlab/middleware/multipart.rb:95:in `call'
lib/gitlab/request_profiler/middleware.rb:14:in `call'
lib/gitlab/middleware/go.rb:17:in `call'
lib/gitlab/etag_caching/middleware.rb:11:in `call'
lib/gitlab/middleware/read_only/controller.rb:28:in `call'
lib/gitlab/middleware/read_only.rb:16:in `call'
lib/gitlab/request_context.rb:18:in `call'
lib/gitlab/metrics/requests_rack_middleware.rb:27:in `call'
lib/gitlab/middleware/release_env.rb:10:in `call'
How can I fix this?