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', 'jp7jrft127pf1uf20bk5sg2aa0', '3.145.158.111', '1738997647', '1738997647', '/index.php?XTCsid=nmu1l7bj1113ksvu525rsptc72&cat=c1146_Strapex-Werkzeug-Akku.html')

[XT SQL Error]