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', 'beebbba41112da720e4ae8d42d8bab05', '216.73.217.130', '1788937595', '1788937595', '/')

[XT SQL Error]