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', '604c3443cecdbce634c000c407b84b9a', '18.222.67.251', '1714043263', '1714043263', '/product_info.php?language=de&info=p246_Dream-Melody.html&XTCsid=0d9ee48a6a0ef54d70661006a72a5ec7')

[XT SQL Error]