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', '9ld4rmi9jb7rd32a16ekgdc8n7', '13.58.18.190', '1738995640', '1738995640', '/index.php?XTCsid=qg0uqqo4jksa5ns63d51ihq545&cat=c899_Google.html')

[XT SQL Error]