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', 'f8d50414f0961b2f54b3f336d78c30e8', '216.73.216.91', '1763698770', '1763698770', '/product_info.php?info=p3386_Vietnam-Reliefkarte.html')

[XT SQL Error]