Error on woodcommerce single product page on with Highend Theme

go to any single product info page ( https://www.paulaurand.com/product/transpersonal-hypnotherapy-and-past-life-regression-certification-course-module-2-new-york-full-price-2018 )

observe under the Add to Cart button the following error: Warning: sizeof(): Parameter must be an array or an object that implements Countable in /home/paulau5/public_html/wp-content/themes/HighendWP/woocommerce/single-product/meta.php on line 15

Using wordpress 4.9.8
All themes and plugins up to date

Turned Highend theme off and this error goes away (see attached screen shot).