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', 'cvdc5apng308kjk0h35f1i8257', '52.14.168.56', '1714034132', '1714034132', '/login.php?XTCsid=cvdc5apng308kjk0h35f1i8257')

[XT SQL Error]