UpSell Not Working

Dear WooCommerce Team,
Please advise, After the last update for WooCommerce, I am receiving error notification on Undefined variable for UpSell. Please visit product page to find the error notification. https://dbrownstudio.com/product/%D7%97%D7%91%D7%99%D7%9C%D7%94-%D7%9E%D7%AA%D7%A7%D7%93%D7%9E%D7%AA-%D7%A0%D7%93%D7%9C%D7%B4%D7%9F/

Here is a copy from up-sells.php file.
<?php
/**
* Single Product Up-Sells
*
* This template can be overridden by copying it to yourtheme/woocommerce/single-product/up-sells.php.
*
* HOWEVER, on occasion WooCommerce will need to update template files and you
* (the theme developer) will need to copy the new files to your theme to
* maintain compatibility. We try to do this as little as possible, but it does
* happen. When this occurs the version of the template file will be bumped and
* the readme will list any important changes.
*
* @see https://docs.woocommerce.com/document/template-structure/
* @author WooThemes
* @package WooCommerce/Templates
* @version 3.0.0
*/

if ( ! defined( ‘ABSPATH’ ) ) {
exit;
}

global $product;

/*** Our code modification inside Woo template – begin ***/
$title_tag = ‘h4’;
$title_tag_options = qode_options()->getOptionValue(‘woo_product_single_related_post_tag’);
if($title_tag_options != ”) {
$title_tag = $title_tag_options;
}

if ( version_compare( WOOCOMMERCE_VERSION, ‘3.0’ ) >= 0 ) {
if ( $upsells ) : ?>

<div class=”up-sells upsells products”>

<<?php esc_attr_e($title_tag); ?> class=”qode-related-upsells-title”><?php esc_html_e( ‘You may also like…’, ‘woocommerce’ ) ?></<?php esc_attr_e($title_tag); ?>>

<?php woocommerce_product_loop_start(); ?>

<?php foreach ( $upsells as $upsell ) : ?>

<?php
$post_object = get_post( $upsell->get_id() );

setup_postdata( $GLOBALS[‘post’] =& $post_object );

wc_get_template_part( ‘content’, ‘product’ ); ?>

<?php endforeach; ?>

<?php woocommerce_product_loop_end(); ?>

</div>

<?php endif;

wp_reset_postdata();
} else {
global $woocommerce_loop;

if ( ! $upsells = $product->get_upsells() ) {
return;
}

$args = array(
‘post_type’ => ‘product’,
‘ignore_sticky_posts’ => 1,
‘no_found_rows’ => 1,
‘posts_per_page’ => $posts_per_page,
‘orderby’ => $orderby,
‘post__in’ => $upsells,
‘post__not_in’ => array( $product->get_id() ),
‘meta_query’ => WC()->query->get_meta_query()
);

$products = new WP_Query( $args );
$woocommerce_loop[‘name’] = ‘up-sells’;
$woocommerce_loop[‘columns’] = apply_filters( ‘woocommerce_up_sells_columns’, $columns );

if ( $products->have_posts() ) : ?>

<div class=”up-sells upsells products”>

<<?php esc_attr_e($title_tag); ?> class=”qode-related-upsells-title”><?php esc_html_e( ‘You may also like…’, ‘woocommerce’ ) ?></<?php esc_attr_e($title_tag); ?>>

<?php woocommerce_product_loop_start(); ?>

<?php while ( $products->have_posts() ) : $products->the_post(); ?>

<?php wc_get_template_part( ‘content’, ‘product’ ); ?>

<?php endwhile; // end of the loop. ?>

<?php woocommerce_product_loop_end(); ?>

</div>

<?php endif;

wp_reset_postdata();
}

/*** Our code modification inside Woo template – end ***/

Please advise how to fix it.
Best Regards,
Daniel