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', 'd40d9f920564d41bd27fd23b107f081e', '3.137.172.68', '1714179842', '1714179842', '/product_info.php/info/p2706_Lettland-Reliefkarte.html')

[XT SQL Error]