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', 'f0bbb0e3214d5c5547fa836c8c0c0846', '216.73.216.110', '1768425627', '1768425627', '/index.php/language/de/cat/c44_3D-Karten.html')

[XT SQL Error]