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', 'ebe1474f0b800a69e14772f231cf9a74', '216.73.217.172', '1789932758', '1789932758', '/')

[XT SQL Error]