1366 - Incorrect integer value: '' for column `CP_as15`.`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', 'um7eavdinhv8lnmq8aj5qij7k1', '18.191.8.183', '1738999531', '1738999531', '/index.php?XTCsid=rkdf8qfiujodbcb5st13ohfmn6&cat=c527_Digital-Kamera-Zubeh--r.html')

[XT SQL Error]