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', 'f7d8b2c8b230cbb883911849d0817691', '3.137.178.133', '1714087354', '1714087354', '/product_info.php?language=de&info=p246_Dream-Melody.html&XTCsid=c369fbc9bc0a436cd7cf3685aed78598')

[XT SQL Error]