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', 'ffe4edae03df45b25fe252e7867422c7', '13.59.130.130', '1713631184', '1713631184', '/index.php/cat/c30_Countries.html/page/4')

[XT SQL Error]