Rhye Services Widget: alter the post type

add_filter( 'arts/elementor/rhye_widget_services_slider/query_args', 'custom_rhye_widget_portfolio_fullscreen_slider_query_args' );
function custom_rhye_widget_portfolio_fullscreen_slider_query_args( $args ) {
  $args = array(
    'post_type' => 'arts_portfolio_item', // page, post, arts_service, arts_portfolio_item, arts_album, etc...
  );

  return $args;
}