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', 'd4sgeo4vi08l359lah2deidbl5', '3.15.6.77', '1713604818', '1713604818', '/login.php?XTCsid=d4sgeo4vi08l359lah2deidbl5')

[XT SQL Error]