NoMethodError: undefined method `access_token' for nil:NilClass

https://sentry.gitlab.net/gitlab/customersgitlabcom/issues/1100779/

NoMethodError: undefined method `access_token' for nil:NilClass
  app/services/gitlab/namespace/list_service.rb:13:in `execute'
    return unless @customer.access_token
  app/helpers/gitlab_plans_helper.rb:86:in `gitlab_namespaces'
    @gitlab_namespaces ||= Gitlab::Namespace::ListService.new(current_customer).execute(params[:plan_id]) # rubocop:disable Rails/HelperInstanceVariable
  app/helpers/gitlab_plans_helper.rb:9:in `gitlab_namespace_options'
    gitlab_namespaces
  app/views/subscriptions/new_extra_ci_minutes_plan.html.haml:29:in `_app_views_subscriptions_new_extra_ci_minutes_plan_html_haml___1101725331863083723_87541060'
    = select_tag 'gl_namespace_id',
  app/controllers/application_controller.rb:99:in `render_custom_or_default_template'
    render name
...
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NoMethodError: undefined method `access_token' for nil:NilClass