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', 'e9d367a75fd8cda32b0ba0a62c4564fa', '216.73.216.191', '1758164455', '1758164455', '/product_info.php/info/p1558_Aegypten-Satellitenbild.html')

[XT SQL Error]