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', '0e93e8ecfaf7f10a6caa3ab5933249ef', '216.73.216.115', '1761456168', '1761456168', '/product_info.php/language/en/info/p3155_Germany-Relief-Map.html')

[XT SQL Error]