Hello,
It comes from WooCommerce Dynamic Pricing & Discounts plugin , https://prnt.sc/1xa4671 Check this article about the issue – it describes in detail how to remove this completely: http://url.rightpress.net/wcdpd-security-announcement Check the comments section of the plugin – https://codecanyon.net/item/woocommerce-dynamic-pricing-discounts/7119279/comments?utf8=%E2%9C%93&term=String.fromCharCode&from_buyers_and_authors_only=0&order_by=relevance
Regards
