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', 'st89kafj0jjbbv9uh3lcp8rek3', '18.191.228.88', '1713280773', '1713280773', '/login.php?XTCsid=st89kafj0jjbbv9uh3lcp8rek3')

[XT SQL Error]