1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '7692d2417b015f74c4c67419d9f80a52', '216.73.216.58', '1770411514', '1770411514', '/')

[XT SQL Error]