Why am I can't? [assembly:Dependency(typeof( ??)]

I see several people use this code, but in my code I can not make it work

[assembly: Dependency(typeof(Droid.Path.Config))]

namespace Droid.Path
{
public class Config : IConfig
{

Error

Severity Code Description Project File Line
Error CS7036 There is no argument given that corresponds to the required formal parameter 'loadHintArgument' of 'DependencyAttribute.DependencyAttribute(string, LoadHint)' Droid.Path Image may be NSFW.
Clik here to view._DESENV\Droid\Path\Config.cs 10

Screenshoot with details and assemblies

http://i.imgur.com/LQKlspi.png

You can help me solve this problem.
I'm using on Visual Studio 2015

THANKS