1366 - Incorrect integer value: '' for column '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', '1uiga73jqnk4o04ugf20jke716', '216.73.216.176', '1762199134', '1762199134', '/index.php?XTCsid=14a7d2371c686363b43a803ce20bf936')

[XT SQL Error]