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', 'fd09ef431b97e6e5e237fe29329e4d83', '3.93.59.171', '1711637586', '1711637586', '/product_info.php?info=p228_Auf-Wiedersehn.html&XTCsid=2e913f95d614b725a3e8a823e845d351')

[XT SQL Error]