1366 - Incorrect integer value: '' for column `pella-ware`.`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', 'vud5kppu0rp6tfcustjr60dc23', '3.147.104.120', '1713547716', '1713547716', '/login.php?XTCsid=vud5kppu0rp6tfcustjr60dc23')

[XT SQL Error]