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', '7d67ojvoe20vtnfqej0cka21i7', '18.221.41.214', '1713538949', '1713538949', '/login.php?XTCsid=7d67ojvoe20vtnfqej0cka21i7')

[XT SQL Error]