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', 'cd4c3317e8e4d0e12272a1c3d40ffe69', '216.73.216.116', '1752283130', '1752283130', '/product_info.php/info/p3992_Afrika-Reliefkarte.html')

[XT SQL Error]