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', '6c5a95bc7fd23418a01fee91e1186e5d', '216.73.216.101', '1791062177', '1791062177', '/')

[XT SQL Error]