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', 'inclou3a3s9oim7bfmcki8ukr5', '18.222.97.248', '1738995871', '1738995871', '/index.php?XTCsid=3ea3bnp0vmbqarg8bfequsbfv5&cat=c1180_Craftsman-Werkzeug-Akku.html')

[XT SQL Error]