NotFoundHttpException in Laravel 5.1

my html link code

<a href="{{route('blog') }}">Details</a>

my route code

Route::get('blog', array('as' => 'blog', 'uses' => function(){
  return view('blog');
}));

error log

in RouteCollection.php line 161
    at RouteCollection->match(object(Request)) in Router.php line 750
    at Router->findRoute(object(Request)) in Router.php line 659
    at Router->dispatchToRoute(object(Request)) in Router.php line 635
    at Router->dispatch(object(Request)) in Kernel.php line 236
    at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))
    at call_user_func(object(Closure), object(Request)) in Pipeline.php line 139
    at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in 

please help me to find this error.Thanks in advance

via Chebli Mohamed