I am using the excellent jumpstarrails pro template and adding solidus into it an existing app using the instructions here - https://guides.solidus.io/advanced-solidus/custom-authenticationhttps://guides.solidus.io/advanced-solidus/custom-authentication - I have hit a blocker that I think I need help/advise from someone who knows spree and roles/permissions - undefined method `spree_roles’ for #<User id: 1, email: - there seems to be step missing to make the cancancan work standalone for solidus - any pointers or advise would be welcome