1366 - Incorrect integer value: '' for column `shop_db3`.`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', '804a06d2e2d8e2613804c8f270c652b1', '3.138.69.45', '1713498904', '1713498904', '/popup_content.php?coID=1&XTCsid=a30b88a4b439ebf54b931b21d14e2df9')

[XT SQL Error]