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', '0803a8f27770c035548464c11e3d0779', '3.12.41.106', '1714011826', '1714011826', '/index.php/language/en')

[XT SQL Error]