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', '4847dbd0a3df01bdcb457d194ccad091', '216.73.216.191', '1758156939', '1758156939', '/product_info.php/language/de/info/p1540_France-Satellite-Image.html')

[XT SQL Error]