我正在使用ArduinoUploader包从我的WPF应用程序上传一个十六进制文件到我的arduino板

private void MenuItem_Mode_Oscilloscope(object sender, RoutedEventArgs e)  
{
   var uploader = new ArduinoSketchUploader(

   new ArduinoSketchUploaderOptions()
    {
        FileName = @"C:\Users\thinkhigh\Desktop\StandardFirmata.ino.hex",
       //PortName = "COM3",
        ArduinoModel = ArduinoUploader.Hardware.ArduinoModel.UnoR3
    });
            
    //FileStream fs = File.OpenRead(FileName);
    Thread.Sleep(2000);
    uploader.UploadSketch();
}

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但是我在运行这个的时候得到了这个错误
System.InvalidOperationException：'序列包含多个元素'
问题是什么，我该如何解决？