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', 'ba6rkb865mbudbdh8j9l0m8923', '3.147.63.162', '1738998777', '1738998777', '/index.php?XTCsid=8e9c41f9ih262sbjeph8l1hut4&cat=c533_Ladeger--t-f--r-Werkzeug-Akkus.html')

[XT SQL Error]