1366 - Incorrect integer value: '' for column `shop_db3`.`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', '918c5906d85be03fe9015dfe5770c790', '3.149.230.44', '1714154189', '1714154189', '/product_info.php?language=de&info=p246_Dream-Melody.html&XTCsid=865ed233708c13d8294a9cd1f6a7eff1')

[XT SQL Error]