Jellyfin not working offline

[Efficient_Good_5784]

I can see following in log:

2024-07-11 14:38:57.523 +02:00] [ERR] [7] Emby.Server.Implementations.Updates.InstallationManager: An error occurred while accessing the plugin manifest: "https://repo.jellyfin.org/files/plugin/manifest.json"
System.Net.Http.HttpRequestException: Network is unreachable (repo.jellyfin.org:443)

But I am not sure what exactly that means and if that is cause of the problems.

The error states the plugin manifest can't reach/connect to the internet.