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', 'bb3fed5d7433dfa71cc0fd26cf08f081', '216.73.217.63', '1789885778', '1789885778', '/')

[XT SQL Error]