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', 'pekspul0dhs9tvopn1h444tt25', '18.191.234.191', '1713552326', '1713552326', '/login.php?XTCsid=pekspul0dhs9tvopn1h444tt25')

[XT SQL Error]