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', 'fddbdp1nh6njj3kh2r5n38ev10', '3.23.128.244', '1738994604', '1738994604', '/index.php?XTCsid=rl82acg8c5l20cikdfeu2s7rt7&cat=c33_Ladeger--t-f--r-Kamera-Akkus.html')

[XT SQL Error]