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', 'de889e719719f37673fb0fdda81418d7', '216.73.216.108', '1763290379', '1763290379', '/index.php/language/en/cat/c6_Satellitenbild-Poster.html')

[XT SQL Error]