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', 'a0a4b8462f80da8f69b39f36d255b16e', '216.73.216.150', '1762216918', '1762216918', '/product_info.php/language/en/info/p439_Reliefkarten-Konfigurator.html')

[XT SQL Error]