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', '1d9679c40557c71b6d4badbfe97f3322', '216.73.216.3', '1767618879', '1767618879', '/product_info.php?info=p1667_Guinea-Bissau-Satellitenbild.html')

[XT SQL Error]