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', '7cacc5707457fff7e1a303c48fb1a15a', '3.15.219.64', '1713399540', '1713399540', '/product_info.php/language/en/info/p2990_Belgien-Reliefkarte.html')

[XT SQL Error]