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', 'f96f7307c2d3bd595ac16de0a8e7d7b1', '216.73.216.8', '1758009626', '1758009626', '/product_info.php/info/p4014_Erde-Reliefkarte.html')

[XT SQL Error]