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', '08e463c969dd06f9085763fb9642c5b2', '216.73.217.95', '1780060703', '1780060703', '/')

[XT SQL Error]