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', 'af762e42d17f6aefa1ba09d37d9d60c3', '3.145.8.141', '1713604102', '1713604102', '/product_info.php?info=p228_Auf-Wiedersehn.html&XTCsid=556213bd995aa263df7318e539f41bde')

[XT SQL Error]