[UPDATE] Module Found Eror

lib/acts_as_followable/followable.rb

@@ -63,7 +63,7 @@ module ActsAsFollowable
       end
 
       def followings(followable_type)
-        return followable_type.where(id: self.follows.where(followable_type: followable_type).pluck(:followable_id))
+        return followable_type.constantize.where(id: self.follows.where(followable_type: followable_type).pluck(:followable_id))
       end
 
       private