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', '4b427a9ca8fddabc41fa8dcba7c0dde6', '3.238.235.181', '1711693074', '1711693074', '/product_info.php?language=de&info=p248_Memory-Of-Spain.html&XTCsid=a451af72c17a970910eac808a75b0ae1')

[XT SQL Error]