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', 'hpe3rt9h2fkg4q8q6m6p0qou25', '18.191.189.85', '1713611263', '1713611263', '/login.php?XTCsid=hpe3rt9h2fkg4q8q6m6p0qou25')

[XT SQL Error]