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', '9o1objimsp4s9jpf2r56gs90b6', '18.226.93.209', '1713422059', '1713422059', '/login.php?XTCsid=9o1objimsp4s9jpf2r56gs90b6')

[XT SQL Error]