The 'InvokeCoreAsync' method cannot be called if the connection is not active

[dmitry-pavlov]

I am getting the following error on any user action (like Counter click, etc):

The 'InvokeCoreAsync' method cannot be called if the connection is not active

Any thoughts about what I am missing, @berhir ?
Are there any nuances I should keep in mind when running Blazor samples on local machine?

P.S. I would suggest to consider adding the steps to run the Blazor sample projects to the README. Maybe also - how to add a simple change to one of the hubs to see the generation in action.

[berhir]

Hi @dmitry-pavlov, are you still seeing this error? I just tried it again and I don't see this problem.
To run the sample, select the BlazorSignalR.Server as startup project and start it.

From the screenshot it seems you are using IIS Express. Can you try to run it with Kestrel?

[dmitry-pavlov]

Ok @berhir , I have set BlazorSignalR.Server as a startup project and ran as Project.

When I go to let say Counter page I see this in the console log:

 Microsoft.AspNetCore.SignalR.HubConnectionHandler[1]
      Error when dispatching 'OnConnectedAsync' on hub.
      System.InvalidOperationException: Unable to resolve service for type 'Microsoft.Extensions.Logging.ILogger' while attempting to activate 'BlazorSignalR.Server.Hubs.MainHub'.
         at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy, Boolean isDefaultParameterRequired)
         at lambda_method43(Closure , IServiceProvider , Object[] )
         at Microsoft.AspNetCore.SignalR.Internal.DefaultHubActivator`1.Create()
         at Microsoft.AspNetCore.SignalR.Internal.DefaultHubDispatcher`1.OnConnectedAsync(HubConnectionContext connection)
         at Microsoft.AspNetCore.SignalR.Internal.DefaultHubDispatcher`1.OnConnectedAsync(HubConnectionContext connection)
         at Microsoft.AspNetCore.SignalR.HubConnectionHandler`1.RunHubAsync(HubConnectionContext connection)

And when I click Click me button I see The 'InvokeCoreAsync' method cannot be called if the connection is not active in the browser dev console:

Any thoughts?