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', '681d47f6eb09703cf8a456d6300b44db', '216.73.217.165', '1786067302', '1786067302', '/')

[XT SQL Error]