System.Windows.Markup.XamlParseException: The invocation of the constructor on type 'TwitchKeyboard.Windows.MainWindow' that matches the specified binding constraints threw an exception.
 ---> System.Net.HttpListenerException (183): Failed to listen on prefix 'http://localhost:51473/' because it conflicts with an existing registration on the machine.
   at System.Net.HttpListener.AddPrefixCore(String registeredPrefix)
   at System.Net.HttpListener.AddAllPrefixes()
   at System.Net.HttpListener.Start()
   at TwitchKeyboard.Classes.Services.NotificationService.Start() in D:\Downloads\TwitchKeyboard-1.0.3-rc.2\TwitchKeyboard-1.0.3-rc.2\Classes\Services\NotificationService.cs:line 26
   at TwitchKeyboard.Windows.MainWindow..ctor() in D:\Downloads\TwitchKeyboard-1.0.3-rc.2\TwitchKeyboard-1.0.3-rc.2\Windows\MainWindow.xaml.cs:line 97
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean wrapExceptions)
   --- End of inner exception stack trace ---
   at System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
   at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
   at System.Windows.Application.LoadBamlStreamWithSyncInfo(Stream stream, ParserContext pc)
   at System.Windows.Application.LoadComponent(Uri resourceLocator, Boolean bSkipJournaledProperties)
   at System.Windows.Application.DoStartup()
   at System.Windows.Application.<.ctor>b__1_0(Object unused)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)