Incarcator standard Cyma USP

Fatal error: Uncaught Error: Call to undefined function wc_review_ratings_enabled() in /home/fastairsoft/public_html/wp-content/themes/xstore/woocommerce/single-product-reviews.php:132 Stack trace: #0 /home/fastairsoft/public_html/wp-includes/comment-template.php(1623): require() #1 /home/fastairsoft/public_html/wp-content/themes/xstore/woocommerce/single-product/tabs/tabs.php(82): comments_template('reviews', Array) #2 /home/fastairsoft/public_html/wp-content/plugins/woocommerce/includes/wc-core-functions.php(210): include('/home/fastairso...') #3 /home/fastairsoft/public_html/wp-content/plugins/woocommerce/includes/wc-template-functions.php(1421): wc_get_template('single-product/...') #4 /home/fastairsoft/public_html/wp-includes/class-wp-hook.php(324): woocommerce_output_product_data_tabs('') #5 /home/fastairsoft/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #6 /home/fastairsoft/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #7 /home/fastairsoft/public_html/wp-cont in /home/fastairsoft/public_html/wp-content/themes/xstore/woocommerce/single-product-reviews.php on line 132