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', 'k8hhqcclra48els6t9t9np3q76', '3.16.130.1', '1713416210', '1713416210', '/login.php?XTCsid=k8hhqcclra48els6t9t9np3q76')

[XT SQL Error]