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', '711f2ad73969bc798daaf397c9fcd78c', '216.73.216.3', '1767313191', '1767313191', '/product_info.php?info=p1649_Schweiz-Satellitenbild.html')

[XT SQL Error]