I am trying to add a table widget extension for Dashboard (downloaded from ESRI's dashboard sample site) and I am having trouble adding it through portal. I follow the instructions when adding the application through portal and I get an error message stating "Unable to load (link to the table widget .json file) status: 404.
It is reading something because if I give a false link it will give me a different error message stating the URL does not reference an Operations Dashboard Extension.
I'm not sure why I am getting this error message. I seem to be following the instructions correctly. Any ideas? I'm running ArcGIS Server 10.4.1.