Fatal error: Uncaught Error: Call to a member function get_tax_class() on null in /home/ljubicav/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php:223 Stack trace: #0 /home/ljubicav/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(649): WC_Cart_Totals->get_items_from_cart() #1 /home/ljubicav/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(141): WC_Cart_Totals->calculate_item_totals() #2 /home/ljubicav/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(132): WC_Cart_Totals->calculate() #3 /home/ljubicav/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1236): WC_Cart_Totals->__construct(Object(WC_Cart)) #4 /home/ljubicav/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1195): WC_Cart->calculate_totals() #5 /home/ljubicav/public_html/wp-content/themes/storefront-child/template-setquantity.php(26): WC_Cart->set_quantity('', '') #6 /home/ljubicav/public_html/wp-includes/templat in /home/ljubicav/public_html/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php on line 223