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', 'a25d0ec16215a5a1f6e1bd85b8fc0e36', '216.73.216.30', '1769402728', '1769402728', '/product_info.php/language/de/info/p3099_Alaska-Relief-Map.html')

[XT SQL Error]