## Summary I have my GitLab server setup to allow SSO from an oauth provider, but when I try to enable auo sign-in I will get an error 500 on the /users/sign_in page. However, regular login using SSO works just fine (when auto sign-in is turned off), but not automatically when redirected from the SSO site. ## Steps to reproduce (Please provide the steps to reproduce the issue) ## Configuration used ```yaml gitlab_rails['omniauth_allow_single_sign_on'] = ['sso'] gitlab_rails['omniauth_auto_sign_in_with_provider'] = ['sso'] gitlab_rails['omniauth_providers'] = [ { 'name' => 'Sso', 'app_id' => 'ID', 'app_secret' => 'SECRET', 'args' => { client_options: { 'site' => 'https://sso.domain.com', 'user_info_url' => '/sso/api/...', 'authorize_url' => '/sso/api/...', 'token_url' => '/sso/api/..' }, user_response_structure: { root_path: [], attributes: { nickname: 'login', name: 'name', email: [ 'profile', 'email', 'email' ], avatar: [ 'profile' , 'avatar', 'url' ] } }, name: 'sso', strategy_class: 'OmniAuth::Strategies::OAuth2Generic' } } ] ``` ## Current behavior Error 500 when redirected to GitLab instance from SSO site. ## Expected behavior To be redirected from SSO site and automatically logged in. ## Versions - Platform: - Self-hosted: Omnibus on Ubuntu, instance updated on 20/05-19 ## Relevant logs ``` ==> /var/log/gitlab/gitlab-rails/production.log <== Completed 500 Internal Server Error in 100ms (ActiveRecord: 4.1ms | Elasticsearch: 0.0ms) NoMethodError (undefined method `user_["sso"]_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007f97b7c65920>): app/controllers/sessions_controller.rb:185:in `auto_sign_in_with_provider' lib/gitlab/i18n.rb:55:in `with_locale' lib/gitlab/i18n.rb:61:in `with_user_locale' app/controllers/application_controller.rb:434:in `set_locale' lib/gitlab/middleware/rails_queue_duration.rb:27:in `call' lib/gitlab/metrics/rack_middleware.rb:17:in `block in call' lib/gitlab/metrics/transaction.rb:57:in `run' lib/gitlab/metrics/rack_middleware.rb:17:in `call' lib/gitlab/middleware/multipart.rb:103:in `call' lib/gitlab/request_profiler/middleware.rb:16:in `call' ee/lib/gitlab/jira/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/correlation_id.rb:16:in `block in call' lib/gitlab/correlation_id.rb:15:in `use_id' lib/gitlab/middleware/correlation_id.rb:15:in `call' lib/gitlab/middleware/read_only/controller.rb:42:in `call' lib/gitlab/middleware/read_only.rb:18:in `call' lib/gitlab/middleware/basic_health_check.rb:25:in `call' lib/gitlab/request_context.rb:26:in `call' lib/gitlab/metrics/requests_rack_middleware.rb:29:in `call' lib /gitlab/middleware/release_env.rb:13:in `call' ```