Projects::Ml::CandidatesController#show - undefined method `can?' for nil:NilClass (ActionView::Template::Error)

Projects::Ml::CandidatesController#show - undefined method `can?' for nil:NilClass (ActionView::Template::Error)

Related code app/presenters/ml/candidate_details_presenter.rb

undefined method `can?' for nil:NilClass (NoMethodError)

      return unless candidate.from_ci? && current_user.can?(:read_build, candidate.ci_build)
                                                      ^^^^^