ERROR EN WOOCOMERCE

Buenos días, a ver si alguien me puede orientar. Al hacer una compra no se termina, es decir, no pasa a la pasera de pago y devuelve éste error:

2022-06-28T09:27:59+00:00 CRITICAL Uncaught TypeError: Argument 3 passed to ZAddons\Product::add_meta_to_item() must be of the type int, string given, called in /srv/vhost/impreziona.com/home/html/wp-content/plugins/zAddon/includes/Product.php on line 114 and defined in /srv/vhost/impreziona.com/home/html/wp-content/plugins/zAddon/includes/Product.php:121
Stack trace:
#0 /srv/vhost/impreziona.com/home/html/wp-content/plugins/zAddon/includes/Product.php(114): ZAddons\Product::add_meta_to_item(3015, '', '', Object(WC_Order_Item_Product))
#1 /srv/vhost/impreziona.com/home/html/wp-includes/class-wp-hook.php(309): ZAddons\Product::order_item_meta(66, Object(WC_Order_Item_Product))
#2 /srv/vhost/impreziona.com/home/html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(66, Array)
#3 /srv/vhost/impreziona.com/home/html/wp-includes/plugin.php(476): WP_Hook->do_action(Array)
#4 /srv/vhost/impreziona.com/home/html/wp-content/plugins/woocommerce/includes/data-stores/abstract-wc-order-item-type-data-store.php(60): do_action('woocommerce_new...',  en /srv/vhost/impreziona.com/home/html/wp-content/plugins/zAddon/includes/Product.php en la línea 121