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', 'fcdad3dd5b77c294dcd632732a529997', '18.218.254.122', '1714178857', '1714178857', '/product_info.php?language=en&info=p247_Nessun-Dorma.html&XTCsid=12ab6c593489deceb1c19806497af77d')

[XT SQL Error]