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', 'qcgr3n5uiq374oq8jmaotlteo1', '3.15.221.67', '1713966844', '1713966844', '/login.php?XTCsid=qcgr3n5uiq374oq8jmaotlteo1')

[XT SQL Error]