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', 'gu08d6pib5q6apuncije0viak3', '3.137.218.230', '1713881928', '1713881928', '/login.php?XTCsid=gu08d6pib5q6apuncije0viak3')

[XT SQL Error]