fix rails admin authenticity error

railsadminteam/rails_admin#2919
dirubah di application.rb dari api_only true jadi false

Author: buncis

config/application.rb

@@ -28,6 +28,6 @@ class Application < Rails::Application
     # Only loads a smaller set of middleware suitable for API only apps.
     # Middleware like session, flash, cookies can be added back manually.
     # Skip views, helpers and assets when generating a new resource.
-    config.api_only = true
+    config.api_only = false
   end
 end