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', 'be61dd23ad469a509e2301a78cd4ad2d', '216.73.216.163', '1788400282', '1788400282', '/')

[XT SQL Error]