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', '864d2f5e9a7b5b67d0cf8cded0ce3351', '216.73.216.8', '1758094874', '1758094874', '/product_info.php/language/de/refID/1/info/p439_Reliefkarten-Konfigurator.html')

[XT SQL Error]