1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '1e94f26b558cbddb60ae6ce68cd74970', '216.73.216.3', '1767590366', '1767590366', '/product_info.php?info=p3580_Vanuatu-2-Reliefkarte.html')

[XT SQL Error]