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', 'e9c0fa331973ee567fab4005e008bb6c', '216.73.216.43', '1763158827', '1763158827', '/index.php/language/en/cat/c38_Map-Konfigurator.html')

[XT SQL Error]