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', '916p0u8pu2d0lhjambnhmqjau3', '3.238.79.169', '1711646263', '1711646263', '/login.php?XTCsid=916p0u8pu2d0lhjambnhmqjau3')

[XT SQL Error]