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', 'mdi09ocee5df8ih5f5kqna30j3', '18.217.67.16', '1713529893', '1713529893', '/login.php?XTCsid=mdi09ocee5df8ih5f5kqna30j3')

[XT SQL Error]