Invalid URL: Invalid Port Specified. 32 feet.net

Question

I'm trying to send a python file to a Bluetooth device using 32feet.net and it throws this error. I have revised it so now it makes an attempt to send but times out and fails.

System.Net.WebException: Connect failed. ---> System.Net.Sockets.SocketException: The requested address is not valid in its context A0AB51BE1948:0000110500001000800000805f9b34fb
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.Connect(EndPoint remoteEP)
at InTheHand.Net.Bluetooth.Msft.SocketBluetoothClient.Connect(BluetoothEndPoint remoteEP)
at InTheHand.Net.Sockets.BluetoothClient.Connect(BluetoothEndPoint remoteEP)
at InTheHand.Net.ObexWebRequest.Connect()
at InTheHand.Net.ObexWebRequest.GetResponse()
--- End of inner exception stack trace ---
at InTheHand.Net.ObexWebRequest.GetResponse()
at Bluetooth_DualSense.Form1.SendFile(String fileToSend, String destinationPath) in C:\Users\timmy\source\repos\Bluetooth DualSense\Bluetooth DualSense\Form1.cs:line 89

Here is my code.

public void SendFile(string fileToSend, string destinationPath)
{
    string macAddr = "A0AB51BE1948";
    var address = BluetoothAddress.Parse(macAddr);
    try
    {
        var obexUri = new Uri("obex://" + address + "/" + destinationPath);
        var request = new ObexWebRequest(obexUri);
        request.ReadFile(fileToSend);
        var response = request.GetResponse() as ObexWebResponse;
        response.Close();
    }
    catch (FileNotFoundException e)
    {
        textBox1.Text += Environment.NewLine + "||||ERROR||||"+ Environment.NewLine + "No Script Found";
        textBox1.Text += Environment.NewLine + "File Created Called: " + e.FileName;
            File.Create(e.FileName);
    }
    catch (Exception ex)
    {
        textBox1.Text += Environment.NewLine+ex;
    }      
}

And to call...

SendFile("FileName.py", Directory.GetCurrentDirectory());