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', 'd6j14cfig013uulk8lnkhf64q4', '18.220.59.69', '1714073321', '1714073321', '/login.php?XTCsid=d6j14cfig013uulk8lnkhf64q4')

[XT SQL Error]