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', 'am2mdkf0an5k8r5ul13jnmu5s7', '18.118.252.19', '1738997404', '1738997404', '/index.php?XTCsid=nmu1l7bj1113ksvu525rsptc72&cat=c1145_Orgapack-Werkzeug-Akku.html')

[XT SQL Error]