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', 'd9e2eee4ddd548e83617fc2e0c8b3846', '3.12.162.179', '1714044691', '1714044691', '/checkout_shipping.php?XTCsid=244b07160d2ebeb432977424993b1b59')

[XT SQL Error]