Fix doorkeeper skip_authorization

config/initializers/doorkeeper.rb

@@ -101,7 +101,7 @@ Doorkeeper.configure do
   # so that the user skips the authorization step.
   # For example if dealing with a trusted application.
   skip_authorization do |resource_owner, client|
-    client.superapp?
+    client.application.superapp?
   end
 
   # WWW-Authenticate Realm (default "Doorkeeper").