Performance Test settings error

hi guys,

i am doing some performance tests on my project but i have errors each time i try to connect to the my server.

log is like this:

[08/20 12:07:18,Telerik.TestStudio.exe(10348:1),Performance] ProfilerClient.CreateCommunicationLayerAsync() : EXCEPTION! (see below)
     Situation: Failure to create comm layer to profiler on PM uri: http://srv-webq01a.tod.loc:55555/
     Outer Exception Type: System.Net.Http.HttpRequestException
     Message: An error occurred while sending the request.
     HRESULT: 0x80131500 (Official ID (if app.) = COR_E_EXCEPTION, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5376)
     Call Stack:
          Server stack trace:
          Exception rethrown at [0]:
          at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
          at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task)
          at Telerik.TestStudio.Shared.Communication.BaseCommunicationLayer.<Get>d__34`1.MoveNext()
          Exception rethrown at [1]:
          at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
          at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task)
          at Telerik.TestStudio.Shared.Communication.ProcessManagerCommunicationLayer.<GetProfilerPathAsync>d__c.MoveNext()
          Exception rethrown at [2]:
          at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
          at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task)
          at ArtOfTest.WebAii.Design.Execution.Profiler.ProfilerClient.<CreateCommunicationLayerAsync>d__31.MoveNext()

     Inner Exception Type: System.Net.WebException
     Message: The underlying connection was closed: An unexpected error occurred on a receive.
     HRESULT: 0x80131509 (Official ID (if app.) = COR_E_INVALIDOPERATION, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5385)
     Call Stack:
          at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
          at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)

     Inner Exception Type: System.IO.IOException
     Message: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
     HRESULT: 0x80131620 (Official ID (if app.) = COR_E_IO, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5664)
     Call Stack:
          at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
          at System.Net.PooledStream.EndRead(IAsyncResult asyncResult)
          at System.Net.Connection.ReadCallback(IAsyncResult asyncResult)

     Inner Exception Type: System.Net.Sockets.SocketException
     Message: An existing connection was forcibly closed by the remote host
     HRESULT: 0x80004005 (Official ID (if app.) = E_FAIL, Error Bit = FAILED, Facility = FACILITY_NULL, Code = 16389)
     Call Stack:
          at System.Net.Sockets.Socket.EndReceive(IAsyncResult asyncResult)
          at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)

kindly advise.​