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', 'v3umqvls543bu2lv8ror5rkro5', '18.222.121.160', '1738998678', '1738998678', '/index.php?XTCsid=c8tsstf8ajiodlgrn3rqsr62b1&cat=c1145_Orgapack-Werkzeug-Akku.html')

[XT SQL Error]