1366 - Incorrect integer value: '' for column `magickland`.`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', '9d7gq1j5ef8q258ue9125absb5', '18.119.137.2', '1718733658', '1718733658', '/index.php/cat/templates/xtc5/img/templates/xtc5/img/templates')

[XT SQL Error]