Error when tried to access params. undefined method `parameters for nil:NilClass

I am new to ruby and i am trying to move a controller concern into gem. So i have new repository.

When i stepped through the rspec and check for params i started getting the error in title. After looking online it say's params is an instance of action_controller so i added a application controller.

class ApplicationController < ActionController::Base
end

But i am still getting same error when tried to check params while stepping through concern.

I believe i should get params as <ActionController::Parameters ...something here...>

How can i fix this?