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', '3c7c892d0d47f6f0140ca6bf0fa6f646', '216.73.216.148', '1755540635', '1755540635', '/product_info.php?info=p3073_Vanuatu-3-Reliefkarte.html')

[XT SQL Error]