TVAPP-00281 Error when streaming

I am unable to stream from my app. Before you ask.  I have updated the tv software.  Turned tv on and off. Reset tv to factory settings.  Rebooted the router.  Deleted the app.  Reloaded the app.  MANY times.  This is happening on multiple tvs for streaming.  I know it connect.  The tv shows Xfinity loading.  Even shows the correct show in the title bar.  And then errors out.  I am beyond frustrated.  This has gone on for two weeks.  Any suggestions?