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', '2f85b12e03e60c8bae3511225d0dcf64', '216.73.216.60', '1777367990', '1777367990', '/')

[XT SQL Error]