1366 - Incorrect integer value: '' for column `creatihu_shop`.`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', '0427bd21e2084b07cdaa1eabbbe921d8', '3.144.252.140', '1713523438', '1713523438', '/product_info.php?info=p312_.html')

[XT SQL Error]