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', '366be6a9e14e81d196ced5963a31b268', '3.17.184.90', '1713506158', '1713506158', '/product_info.php/language/de/info/p3213_Bulgarien-Reliefkarte.html')

[XT SQL Error]