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', '238fbccddfe066a00a5e2a4ef5c57c32', '3.85.9.208', '1711692296', '1711692296', '/product_info.php?info=p248_Memory-Of-Spain.html&XTCsid=c00a13a977272d3659dd7fe5a5f758e9')

[XT SQL Error]