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', '90e879c2712b0911517665cf48b40474', '216.73.216.8', '1758063424', '1758063424', '/product_info.php/language/de/info/p1739_Cape-Verde-Satellite-Image.html')

[XT SQL Error]