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', '9e4uptepll610b2usgq03o1ij4', '18.217.208.72', '1713932136', '1713932136', '/login.php?XTCsid=9e4uptepll610b2usgq03o1ij4')

[XT SQL Error]