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', 'gqqvl4letf62csogdtsm8cp6m4', '3.146.152.99', '1713617397', '1713617397', '/login.php?XTCsid=gqqvl4letf62csogdtsm8cp6m4')

[XT SQL Error]