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', 'j6voapq63bfn0bckhkfperse65', '18.221.235.209', '1713524621', '1713524621', '/login.php?XTCsid=j6voapq63bfn0bckhkfperse65')

[XT SQL Error]