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', 'u9h574i7hp7l6blanltgjr5pv1', '18.218.236.85', '1722054975', '1722054975', '/index.php?cat=c50_Einkaufskoerbe-rund-L.html')

[XT SQL Error]