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', '87d245a4ec7a84e5a59cac6036ff7c03', '216.73.216.28', '1763580339', '1763580339', '/product_info.php?info=p3337_Ist-Faeroeer--5-Reliefkarte.html')

[XT SQL Error]