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', '9e13c88ce8df7c7651085feb36ceae71', '216.73.216.3', '1767615080', '1767615080', '/product_info.php?info=p1593_Rumaenien-Satellitenbild.html')

[XT SQL Error]