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', '709d5b9b4582b6d52a4790b6d6d0dbb5', '216.73.216.142', '1758239049', '1758239049', '/product_info.php/info/p1678_Djibouti-Satellitenbild.html')

[XT SQL Error]