View file understrap-master/inc/woocommerce.php

<?php
/**
 * Add WooCommerce support
 *
 *
 * @package understrap
 */

add_action( 'after_setup_theme', 'woocommerce_support' );
if ( ! function_exists ( 'woocommerce_support' ) ) {
	function woocommerce_support() {
	    add_theme_support( 'woocommerce' );
	}
}