1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', 's53rq9qkquq0lk4c12dh3ibvo6', '216.73.216.165', '1751600278', '1751600278', '/index.php?cat=c58_Koerbe-rund-XXS.html')

[XT SQL Error]