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', 'df1o1uhllmf7kbun2m45ovib21', '18.223.172.252', '1714072293', '1714072293', '/login.php?XTCsid=df1o1uhllmf7kbun2m45ovib21')

[XT SQL Error]