1366 - Incorrect integer value: '' for column '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', '01nn2tfa1qorsh3jb49il193s6', '216.73.216.213', '1789932028', '1789932028', '/xtshop/account.php')

[XT SQL Error]