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', '850dc2df897ae3df0d711c43bf773e3f', '18.216.239.46', '1713614019', '1713614019', '/product_info.php/language/de/info/p3992_Afrika-Reliefkarte.html')

[XT SQL Error]