Erro No plugin

Olá

Estou verificando nos logs do PHP que o plugin esta notificando este erro:

weight was called incorrectly. As propriedades do produto n?o devem ser acessadas diretamente. Backtrace: require(‘wp-blog-header.php’), require_once(‘wp-includes/template-loader.php’), do_action(‘template_redirect’), WP_Hook->do_action, WP_Hook->apply_filters, WC_AJAX::do_wc_ajax, do_action(‘wc_ajax_update_order_review’), WP_Hook->do_action, WP_Hook->apply_filters, WC_AJAX::update_order_review, WC_Cart->calculate_totals, WC_Cart->calculate_shipping, WC_Shipping->calculate_shipping, WC_Shipping->calculate_shipping_for_package, WC_Shipping_Method->get_rates_for_package, WC_Frenet->calculate_shipping, WC_Frenet->frenet_calculate_json, WC_Abstract_Legacy_Product->__get, wc_doing_it_wrong. This message was added in version 3.0.