1366 - Incorrect integer value: '' for column `creatihu_shop`.`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', '53f26794771fb76c5c5b41f7702d64a5', '18.224.30.118', '1713497108', '1713497108', '/index.php?cat=c100_Digitaldruck--Tapete.html')

[XT SQL Error]