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', '98c0e09d84de5b98f1606863b1871b3f', '216.73.216.44', '1769102106', '1769102106', '/index.php/cat/c29_Kontinente.html')

[XT SQL Error]