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', 'gt7edhoh50kme6a28c2hrt0m15', '3.89.72.221', '1711714169', '1711714169', '/login.php?XTCsid=gt7edhoh50kme6a28c2hrt0m15')

[XT SQL Error]