How to add custom message for shortcodes when there are no results. This applies to all of our plugins but we will do sample with Auction shortcodes.
function wpg_action_woocommerce_shortcode_products_loop_no_results( $attributes ) {
echo __( 'No auction(s) found.', 'my-lang' );
}
add_action( 'woocommerce_shortcode_won_auctions_loop_no_results', 'wpg_action_woocommerce_shortcode_products_loop_no_results', 10, 1 );
add_action( 'woocommerce_shortcode_my_active_auctions_loop_no_results', 'wpg_action_woocommerce_shortcode_products_loop_no_results', 10, 1 );