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', 'eb6b91d35403bef146bb114ef95af1d6', '3.17.6.75', '1713432122', '1713432122', '/product_info.php?language=de&info=p246_Dream-Melody.html&XTCsid=ed890d870a93292a1cc254113c4cf12e')

[XT SQL Error]