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', '006c900a2732c7519a3428381448d1eb', '216.73.216.155', '1751312425', '1751312425', '/index.php/language/de/cat/c40_Map-Konfigurator.html')

[XT SQL Error]