NameError in ActivitiesController#index uninitialized constant ActivitiesController::PublicActivity

[Emanuel Coen]

class ActivitiesController < ApplicationController
  def index
    @activities = PublicActivity::Activity.order("created_at desc")
  end
end

I get the same error when I want to create a new model of the tracked model ( a List instead of a Recipe in my case).

Im pretty lost if someone can help I would be really thankful. Can post more code or repo if needed.

[Emanuel Coen]

I solved the problem by adding "::"  before PublicActivity