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', 'cf935007c93c99a464f0303935e6dab9', '216.73.216.121', '1771208113', '1771208113', '/product_info.php/language/de/info/p436_3D-Satellite-Image-Configurator.html')

[XT SQL Error]