Handling products not found messages.

jet-woo-builder-products-not-found-message.php

<?php
	add_filter( 'jet-woo-builder/shortcodes/jet-woo-products/not-found-message', '__your_theme_prefix_set_custom_not_found_message', 10, 2 );

	function __your_theme_prefix_set_custom_not_found_message( $message, $object ) {

		$query = $object->query();

		if ( $query->get( 'jet_smart_filters' ) === jet_smart_filters()->render->request_provider( 'raw' ) && ! $query->have_posts() ) {
			$message = 'Your filter settings do not return a match. Please choose other options'; // for smart filters
		} elseif ( ! $query->have_posts() ) {
			$message = 'No products in this category'; // other situations 
		}

		return $message;

	}