NoMethodError: undefined method `casecmp' for nil:NilClass

https://sentry.gitlab.net/gitlab/gitlabcom/issues/1095981/

NoMethodError: undefined method `casecmp' for nil:NilClass
Did you mean?  case
  ee/quick_actions/target_service.rb:7:in `execute'
    return epic(type_id) if type.casecmp('epic').zero?
  projects/autocomplete_sources_controller.rb:43:in `target'
    .execute(params[:type], params[:type_id])
  projects/autocomplete_sources_controller.rb:27:in `commands'
    render json: autocomplete_service.commands(target, params[:type])
  action_controller/metal/basic_implicit_render.rb:6:in `send_action'
    super.tap { default_render unless performed? }
  abstract_controller/base.rb:194:in `process_action'
    send_action(method_name, *args)
...
(120 additional frame(s) were not displayed)

NoMethodError: undefined method `casecmp' for nil:NilClass
Did you mean?  case