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', 'ce65d9178b2d18e1466b484c5cf5b2f0', '216.73.216.191', '1758171763', '1758171763', '/index.php/cat/c35_Countries.html/page/6')

[XT SQL Error]