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', 'b7e4bc97bfab64c0b14c8d86c21d633f', '44.206.227.65', '1711623733', '1711623733', '/product_info.php?language=en&info=p247_Nessun-Dorma.html&XTCsid=7449276e387898a36bd6271988bac6c7')

[XT SQL Error]