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', 'f2f3f584824f468fe9d03c964b6dc1ac', '216.73.216.3', '1767590329', '1767590329', '/product_info.php?info=p1805_Niue-Satellitenbild.html')

[XT SQL Error]