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', 'a04fd40ca46e3235c4c5f3a19492b3ff', '216.73.216.191', '1758206503', '1758206503', '/product_info.php/language/de/info/p1814_Cape-Verde-7-Satellite-Image.html')

[XT SQL Error]