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', '4i8qn9lgn7rd23ajjatp63gd10', '3.19.31.73', '1714178526', '1714178526', '/login.php?XTCsid=4i8qn9lgn7rd23ajjatp63gd10')

[XT SQL Error]