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', '3qghkkp8bcreq3m06bmcocl7f4', '18.118.200.86', '1713445493', '1713445493', '/login.php?XTCsid=3qghkkp8bcreq3m06bmcocl7f4')

[XT SQL Error]