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', 'fae3e301ac0b700cfd7bc6f54a74d4fb', '216.73.216.191', '1758204878', '1758204878', '/product_info.php/info/p2988_Armenien-Reliefkarte.html')

[XT SQL Error]