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', '3e9e77bb42b7e97f89ca3fc8609e55a4', '216.73.216.251', '1752523154', '1752523154', '/product_info.php/info/p1788_Cayman-Ins--Satellitenbild.html')

[XT SQL Error]