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', 'd847665d1f8ecfc9b68236890e191f4b', '216.73.216.3', '1767615079', '1767615079', '/product_info.php?info=p1749_Solomon-Ins--7-Satellitenbild.html')

[XT SQL Error]