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', '783efc91a2ab46fa94797f15ebcfdbca', '3.140.185.170', '1713588217', '1713588217', '/product_info.php?info=p324_Jericho---Lippenhantel.html&XTCsid=c00a13a977272d3659dd7fe5a5f758e9')

[XT SQL Error]