Errors in debug

Hello,

Having some issues with the plugin which I believe are due to the plugin not being compatible with the latest WP and Woocommerce updates. See error example:

[07-Sep-2020 04:55:45 UTC] PHP Fatal error: Uncaught Error: Call to a member function get_image() on bool in /home/xxxxx/public_html/wp-content/plugins/woo-unlimited-upsell-lite/includes/class-woocommerce-unlimited-upsell.php:519
Stack trace:
#0 /home/xxxxx/public_html/wp-content/plugins/woo-unlimited-upsell-lite/includes/class-woocommerce-unlimited-upsell.php(459): WooCommerce_Unlimited_Upsell->show_offer(3)
#1 /home/xxxxx/public_html/wp-includes/class-wp-hook.php(287): WooCommerce_Unlimited_Upsell->get_upsell_offer(”)
#2 /home/xxxxx/public_html/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#3 /home/xxxxx/public_html/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#4 /home/xxxxx/public_html/wp-includes/general-template.php(3022): do_action(‘wp_footer’)
#5 /home/xxxxx/public_html/wp-content/themes/betheme/footer.php(182): wp_footer()
#6 /home/xxxxx/public_html/wp-includes/template.php(730): require_once(‘/home/petert/pu…’)
#7 /home/xxxxx/public_html/wp-includes/template.php(676): load_template(‘/home/petert/ in /home/xxxxx/public_html/wp-content/plugins/woo-unlimited-upsell-lite/includes/class-woocommerce-unlimited-upsell.php on line 519

If you could help us in determining the best steps to resolve these issues it would be greatly appreciated. Thank you for developing the very useful plugin!