_navbar.html.haml in tramway-admin-1.1.4.7

- old
+ new

@@ -1,12 +1,12 @@
 %nav.navbar.navbar-expand-md.navbar-dark.bg-dark
   = link_to @application&.title || t('application.title'), try(:root_path) || '/', class: 'navbar-brand'
   .navbar-collapse.collapse
     - if signed_in?
       %ul.navbar-nav
-        - ::Tramway::Admin.singleton_models.each do |model|
+        - ::Tramway::Admin.singleton_models&.each do |model|
           = model_menu_item model: model, route: ::Tramway::Admin::Engine.routes.url_helpers.singleton_path(model: model)
-        - ::Tramway::Admin.available_models.each do |model|
+        - ::Tramway::Admin.available_models&.each do |model|
           = model_menu_item model: model, route: ::Tramway::Admin::Engine.routes.url_helpers.records_path(model: model)
     %ul.nav.navbar-nav.ml-auto
       - if signed_in?
         %li.nav-item
           = link_to '/session', method: :delete, class: 'nav-link' do