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', 'f8b82c4ac5c917c9882bf68e180cf2f5', '216.73.216.130', '1767872516', '1767872516', '/index.php/cat/c30_Countries.html/page/5')

[XT SQL Error]