1366 - Incorrect integer value: '' for column `shop_db3`.`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', 'ed4887cce74456b919a1326c61042688', '18.191.223.123', '1714133071', '1714133071', '/shopping_cart.php?XTCsid=12ab6c593489deceb1c19806497af77d')

[XT SQL Error]