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', '2300c30d94221ac3e98d44e799904c24', '3.15.147.215', '1714048250', '1714048250', '/shop_content.php?coID=9&XTCsid=244b07160d2ebeb432977424993b1b59')

[XT SQL Error]