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', 'jndm6a3ohadevm963s98u311q3', '3.135.201.22', '1738995296', '1738995296', '/index.php?XTCsid=qg0uqqo4jksa5ns63d51ihq545&cat=c1246_Werkzeug.html')

[XT SQL Error]