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', 'h240lce479t2rtq1379dure8k7', '3.137.172.68', '1714191706', '1714191706', '/login.php?XTCsid=h240lce479t2rtq1379dure8k7')

[XT SQL Error]