1366 - Incorrect integer value: '' for column `pella-ware`.`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', 'q1cjg8qh5untm2nakht9tsfau4', '13.59.130.130', '1713611021', '1713611021', '/login.php?XTCsid=q1cjg8qh5untm2nakht9tsfau4')

[XT SQL Error]