c# - SignalR: "Protocol error: Unknown transport." when navigating to hub -

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I am trying to use the ASP.NET signal for the first time - here's what I did: created a new web Has been added to the project and the following signal R packages:

Enter image details here < / P>

I have created the following category: 

  [Hub-name ("chat")] Public class ChatHub: Hub {Public Zero Halo () {Clients.All.hello ( ); }}

and the following startup configuration: 

  public partial class startup {public zero configuration (IAppBuilder app) {configure (app); App.MapSignalR (); }}

However, whenever I navigate

localhost: (port) / api / signalr / chat

< P> I get the following error:

Protocol error: Unknown transport.

I am running a new browser and trying different people so remove it from the API / URL, and just use the localhost: (potter) / signaller / Chat


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