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', '4e697d61e4d4ddf370b26b1d6879f1a6', '216.73.216.3', '1767313336', '1767313336', '/product_info.php?info=p1598_Nordkorea-Satellitenbild.html')

[XT SQL Error]