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', 'f10ccb7f4c572e6f37b9e65556f29d75', '216.73.216.91', '1763698681', '1763698681', '/product_info.php?info=p2660_Polen-Reliefkarte.html')

[XT SQL Error]