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', '9b1c028877c4a06d4fdb8ed6a554653a', '216.73.216.28', '1763538549', '1763538549', '/index.php/language/de/cat/c37_Welt.html')

[XT SQL Error]