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', '0e31955417b7078b1ecac88f413c4523', '3.135.183.187', '1713549413', '1713549413', '/products_new.php?XTCsid=a30b88a4b439ebf54b931b21d14e2df9')

[XT SQL Error]