Hi there, 

Welcome to the Box Community, I'm happy to help!

Please be informed that this community is primarily intended for English language speakers. If you are able to post your question in English, the community may be better able to assist. Google Translate or other tools may help! If any community members are able to understand and help, it would be greatly appreciated.

Thanks for posting!

以前同じ質問を投げた者です。

アプリでのアップロードであれば、一度アプリをアンインストールしてインストールしなおすことで解決しました。

お試しください。