1366 - Incorrect integer value: '' for column `pella-ware`.`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', '9drnbgpr5pqr9h1nrj2s98qo76', '3.137.199.162', '1713407381', '1713407381', '/login.php?XTCsid=9drnbgpr5pqr9h1nrj2s98qo76')

[XT SQL Error]