Initialization method S7.Net.UnitTest.S7NetTests.Setup threw exception. S7.Net.PlcException: Couldn't establish the connection to 127.0.0.1.
Message: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host..