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', '956571d0c9ff167c9a0afe6c8f6a6f89', '3.227.239.9', '1711647400', '1711647400', '/shop_content.php?coID=4&XTCsid=41d98929aac05a618616c6b9cf3dbbec')

[XT SQL Error]