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', '8a095102056a768d4c7e5c08edf0f48c', '3.22.61.246', '1714175621', '1714175621', '/product_info.php?language=de&info=p247_Nessun-Dorma.html&XTCsid=cb0ad84d7acc90898c9ea3492fbc1557')

[XT SQL Error]