我已经从备份中还原了Gitlab，现在每次尝试访问该runners网页时，我都会收到内部服务器错误。
我尝试卸载所有配置的gitlab-runners并访问它，问题仍然存在。这是gitlab-rails / production.log中的跟踪：
Started GET "/admin/runners" for 127.0.0.1 at 2019-01-16 07:17:12 -0500
Processing by Admin::RunnersController#index as HTML
Completed 500 Internal Server Error in 66ms (ActiveRecord: 5.7ms)
ActionView::Template::Error ():
37:
38: .col-sm-6
39: .bs-callout
40: = render partial: 'ci/runner/how_to_setup_runner',
41: locals: { registration_token: Gitlab::CurrentSettings.runners_registration_token,
42: type: 'shared',
43: reset_token_url: reset_registration_token_admin_application_settings_path }
lib/gitlab/crypto_helper.rb:27:in `aes256_gcm_decrypt'
app/models/concerns/token_authenticatable_strategies/encrypted.rb:55:in `get_token'
app/models/concerns/token_authenticatable_strategies/base.rb:33:in `ensure_token!'
app/models/concerns/token_authenticatable.rb:43:in `block in add_authentication_token_field'
app/models/application_setting.rb:409:in `runners_registration_token'
lib/gitlab/current_settings.rb:19:in `method_missing'
app/views/admin/runners/index.html.haml:40:in `_app_views_admin_runners_index_html_haml___977288809002382166_69944849285200'
app/controllers/application_controller.rb:116:in `render'
lib/gitlab/i18n.rb:55:in `with_locale'
lib/gitlab/i18n.rb:61:in `with_user_locale'
app/controllers/application_controller.rb:420:in `set_locale'
lib/gitlab/middleware/multipart.rb:103:in `call'
lib/gitlab/request_profiler/middleware.rb:16:in …