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', 'ub616jn17mb8n8c0lmejsu2u91', '18.117.153.38', '1713527271', '1713527271', '/login.php?XTCsid=ub616jn17mb8n8c0lmejsu2u91')

[XT SQL Error]