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', 'e3daf4474150458002d3d9798c807cac', '216.73.216.191', '1758197856', '1758197856', '/index.php/language/de/cat/c38_Karten-Konfigurator.html')

[XT SQL Error]