The document editor is completely empty, no toolbar, menu, content of the docx file are shown. My website is written in .NET Core 8.0 and document server is self-hosted

I’m using a document server at a different IP and my .NET Core website is written with Visual Studio. I follow the API guide there to open doc editor for a docx file (I checked that the url is accessible)

The token was generated correctly.
However, when I debug the project, no toolbar, menu or content of the docx file is shown. All is empty. No javascript error is shown either.

Hello @tmdset,
Please provide your Editor’s initialization config as file
What is the type of Document Server installation? (Docker, rpm/deb, Windows Server)
What is the installed version of the Document Server?