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', 'cvr9fb5hfkgtkgtubqa3057q06', '3.144.248.24', '1713546008', '1713546008', '/login.php?XTCsid=cvr9fb5hfkgtkgtubqa3057q06')

[XT SQL Error]