"File Not Found" when Exporting

I'm having the same problem and it's ridiculous. I have to individually click each image to save

Your original files are not housed on the SD card after they are added to Lightroom. The images are uploaded to a cloud server. Check to see if the upload sync has completed by clicking on the cloud icon.

Sign-in to lightroom.adobe.com with a browser to check the contents of the cloud. Do you see your images there?

使用しているOS、Lightroomのバージョンは何でしょうか？

日本のフォーラムでも似た症状が報告されています。

https://community.adobe.com/t5/lightroom%E3%83%95%E3%82%A9%E3%83%BC%E3%83%A9%E3%83%A0-discussions/%E7%BA%8F%E3%82%81%E3%81%A6%E5%A4%9A%E6%95%B0%E3%82%92%E6%9B%B8%E3%81%8D%E5%87%BA%E3%81%97%E3%81%99%E3%82%8B%E9%9A%9B%E3%81%AB%E6%99%82%E3%81%AB%E3%82%A8%E3%83%A9%E3%83%BC%E7%99%BA%E7%94%9F/td-p/13321464