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', 'o4789u6ck4jocmr4dd3o37m996', '3.145.96.41', '1738997591', '1738997591', '/index.php?XTCsid=nmu1l7bj1113ksvu525rsptc72&cat=c1008_LiFePO4-Caravan-Akku---Zubeh--r.html')

[XT SQL Error]