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', '5f00951367f406d4d09ebdde40c6845a', '3.236.27.143', '1685263145', '1685263145', '/product_info.php/info/p4019_3D-Reliefkarten-Konfigurator.html?refID=1')

[XT SQL Error]