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', '2e11c2b09a84a110cf90bce700d4b1f8', '18.221.85.33', '1713420679', '1713420679', '/shopping_cart.php?XTCsid=1ac6c2897c9e1517fbc2b6cff40eabd3')

[XT SQL Error]