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', '2a81156439911bef1a87e7b91822d56d', '216.73.216.108', '1763395604', '1763395604', '/products_new.php')

[XT SQL Error]