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', '2dc0c1500d2b85d54be37cfdc3c66003', '216.73.216.91', '1763698773', '1763698773', '/product_info.php?info=p2738_Togo-Reliefkarte.html')

[XT SQL Error]