1366 - Incorrect integer value: '' for column `CP_as15`.`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', 's1k8h4mimaugpkm7tp0dnt69p5', '3.144.162.107', '1738994085', '1738994085', '/index.php?XTCsid=qg0uqqo4jksa5ns63d51ihq545&cat=c468_Handy-Zubeh--r.html')

[XT SQL Error]