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', 'ffc722b0f601797a408b8879f83cfd0e', '216.73.216.3', '1767615115', '1767615115', '/product_info.php?info=p3268_Philippinen-4-Reliefkarte.html')

[XT SQL Error]