Errors [id was called incorrectly]

this plug in is generating alot of errors. Is this plugin dead ?

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_add_to_cart’), WP_Hook->do_action, WP_Hook->apply_filters, WC_AJAX::add_to_cart, apply_filters(‘woocommerce_add_to_cart_validation’), WP_Hook->apply_filters, WC_Quantities_and_Units_Quantity_Validations->add_to_cart_validation, WC_Quantities_and_Units_Quantity_Validations->validate_single_product, wcqu_get_applied_rule, wcqu_get_applied_rule_obj, WC_Abstract_Legacy_Product->__get, wc_doing_it_wrong.