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', 'd9f32fade5d66cac56a99d77bfc9407c', '3.239.162.98', '1711708448', '1711708448', '/shop_content.php?coID=4&XTCsid=a30b88a4b439ebf54b931b21d14e2df9')

[XT SQL Error]