Fatal error: Uncaught Error: Call to a member function get_tax_class() on boolean in /tucchotest.tuccho.com/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php:223 Stack trace: #0 /tucchotest.tuccho.com/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(650): WC_Cart_Totals->get_items_from_cart() #1 /tucchotest.tuccho.com/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(141): WC_Cart_Totals->calculate_item_totals() #2 /tucchotest.tuccho.com/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php(132): WC_Cart_Totals->calculate() #3 /tucchotest.tuccho.com/wp-content/plugins/woocommerce/includes/class-wc-cart.php(1237): WC_Cart_Totals->__construct(Object(WC_Cart)) #4 /tucchotest.tuccho.com/wp-includes/class-wp-hook.php(286): WC_Cart->calculate_totals() #5 /tucchotest.tuccho.com/wp-includes/class-wp-hook.php(312): WP_Hook->apply_filters(NULL, Array) #6 /tucchotest.tuccho.com/wp-content/plugins/woocommerce/includes/class-wc-cart-totals.php on line 223

I have deactivated the terawallet plugin and tested, working without any issue.