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', 'bf826b4118df7c70e1fe85c0fffc45cc', '216.73.216.245', '1790458023', '1790458023', '/')

[XT SQL Error]