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', 'bd54ce1280b2341faadb13073d939f7d', '216.73.216.143', '1762457190', '1762457190', '/index.php/language/de/cat/c35_Countries.html/page/4')

[XT SQL Error]