The action 'report' could not be found for MedicalRecordsController

The following happens,

I have this in the routes:

resources :professionals do
    #...
    resources :medical_records, controller: 'medical_records', only: [] do
      collection do
        get :report
      end
    end
  end

And the action within MedicalRecordsController exists and is this:

def report
    medical_records_scope = begin_of_association_chain.order('active DESC')
    medical_records_scope = medical_records_scope.like(params[:filter].strip) if params[:filter]

    @medical_records_report = medical_records_scope

    respond_to do |format|
      format.xlsx {
        response.headers['Content-Disposition'] = 'attachment; filename="medical_records.xlsx"'
        render disposition: 'inline'
      }
    end
  end

The error message is that of the title, which does not find the action. According to the documentation

The action 'report' could not be found for MedicalRecordsController