c# - Object reference not set to an instance of an object. BitShuva -

Hi, I've downloaded some source code and I'm getting some major problems coming out of the box directly. I have not found any answers from the developer and I have not asked this question to anyone else, but I saw and saw and saw and I do not know what is going wrong.

I get this error:

Server error in '/' application
Object references are not set to an object instance.

Description: ..

During the execution of the current web request, there was an exception without verb - for more information about the error, please review the stack trace and where it originated in the code

Exception description:

System.NullReferenceException:. Object references are not set for an instance of an object

Source error:

  Line 157: // Expected ID is the standard Raven ID: "Songs / 4321 "Line 158: Const String Expected IDPix =" songs / "; Line 159: If (song.Id.StartsWith (expectedIdPrefix, StringComparison.OrdinalIgnoreCase)) line 160: {Line 161: New ArgumentException (".ID was not in the expected format");   
 Visual Studio highlights this bit of code (by ** ** marked)  
 using  (on session = Get.A & LT; IDocumentStore & gt ;. () OpenSession ()) {var songFiles = Directories .EnumerateFiles (Server.MapPath ("~ / content / sample / music"), "* .mp3") .Select (f = & gt; New {songs = new songs (Path.GetFileName (f)), FilePath = f}). ToArray (); SongFiles.ForEach (async f = & gt; ** wait f.Song.UploadMp3ToCdn (f.FilePath)); ** If (! Session QQ; song & gt; (). Any ()) {songFiles.ForEach (s => Session Store (s)); Session.SaveChanges (); }}    
 
 
 You can monitor  songFiles  inside the debugger Have tried? The error is to suggest that either  f.Song  or  f.FilePath  seems null / uninitialised.