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', '86054ef6989588aacecee8375973e435', '18.117.81.240', '1714266622', '1714266622', '/index.php?refID=2')

[XT SQL Error]