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', 'q2lav9s0p2v8hv1bae8mb73qv6', '18.224.30.203', '1738997895', '1738997895', '/index.php?XTCsid=nmu1l7bj1113ksvu525rsptc72&cat=c215_Black---Decker-Werkzeug-Akku.html')

[XT SQL Error]