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', 'ao8o4rp366dtsgs17ckb1nk0o3', '184.72.135.210', '1711664854', '1711664854', '/login.php?XTCsid=ao8o4rp366dtsgs17ckb1nk0o3')

[XT SQL Error]