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', '1t6rg9cevrgtdn8f45qd61alj2', '52.14.85.76', '1713553495', '1713553495', '/login.php?XTCsid=1t6rg9cevrgtdn8f45qd61alj2')

[XT SQL Error]