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', 'vjprgr6f1s9o8lu2mdcque6mo1', '3.138.101.95', '1713426091', '1713426091', '/login.php?XTCsid=vjprgr6f1s9o8lu2mdcque6mo1')

[XT SQL Error]