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', 'c5e547ea96004294fe545dc84473ada6', '216.73.216.21', '1770210705', '1770210705', '/product_info.php/language/de/info/p1856_Marshall-Is--Satellite-Image.html')

[XT SQL Error]