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', '02cb26b0229d90afd4b72dfe60548202', '216.73.216.30', '1768520168', '1768520168', '/product_info.php/info/p4017_Relief-Map-Poster-Configurator.html')

[XT SQL Error]