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', 'b3188fba28dd3bab9ab7c75a2ffc3bba', '216.73.216.121', '1751838797', '1751838797', '/product_info.php/language/en/info/p1520_Argentinien-Satellitenbild.html')

[XT SQL Error]