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', '9inoap8pjpdk64qdrjnqfd6bo2', '18.189.29.43', '1738993835', '1738993835', '/index.php?XTCsid=je9k4v12tkp4tisil6f61oiu11&cat=c920_Roboter---Staubsauger-Zubeh--r.html')

[XT SQL Error]