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', '6sjve11imppc35ivs79cire2f6', '18.117.216.229', '1714104029', '1714104029', '/login.php?XTCsid=6sjve11imppc35ivs79cire2f6')

[XT SQL Error]