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', '8ks0lr88ooal9dm2sn8e3a99i3', '3.144.97.217', '1738993692', '1738993692', '/index.php?XTCsid=8km4iag7d9anolhh9c02p13aq2&cat=c587_Ladeger--t-f--r-Blei-Gel-Akkus.html')

[XT SQL Error]