1366 - Incorrect integer value: '' for column `shop_db3`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', 'f81447e433fcc9d521754fecbee8915e', '18.221.53.209', '1714177784', '1714177784', '/product_info.php?info=p52_Trompeten-Galopp--Bravour-Polka-.html&XTCsid=c7f035e02971a7df32ae13cabef322ff')

[XT SQL Error]