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', 'umuer8nhb20rdi8djse99fpq02', '18.220.160.216', '1713575153', '1713575153', '/login.php?XTCsid=umuer8nhb20rdi8djse99fpq02')

[XT SQL Error]