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', '8b85b2f8f46caced370f4d4fb2b6f2e2', '216.73.217.32', '1783882626', '1783882626', '/')

[XT SQL Error]