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', 'acegqia91ljh73l9jpo6cuclt1', '3.149.239.110', '1713569804', '1713569804', '/login.php?XTCsid=acegqia91ljh73l9jpo6cuclt1')

[XT SQL Error]