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', '431c465f3cd1dca7d904841048672869', '216.73.216.108', '1763361363', '1763361363', '/index.php/cat/c29_Kontinente.html')

[XT SQL Error]