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', '3856700c0f0435967d78777437ef6cc7', '216.73.217.30', '1777799006', '1777799006', '/')

[XT SQL Error]