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', 'f5c8b3bfbsfbakv5oslepcmvj7', '3.89.163.156', '1711718183', '1711718183', '/login.php?XTCsid=f5c8b3bfbsfbakv5oslepcmvj7')

[XT SQL Error]