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', '72fcig9gnnbnit35vhbcfm7pi7', '18.191.21.86', '1714059795', '1714059795', '/login.php?XTCsid=72fcig9gnnbnit35vhbcfm7pi7')

[XT SQL Error]