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', '18451307bdf0900a33acf7134cde59ec', '216.73.216.20', '1771725503', '1771725503', '/product_info.php?info=p1770_Solomon-Ins--8-Satellitenbild.html')

[XT SQL Error]