PHP Laravel : Autocomplete Search 404 (Not Found)

I'm building a laravel application where I have to use autocomplete search in my application.

My Route:

Route::get('/autocomplete',[
        'uses'=>'CourseController@autocomplete',
        'as'=>'autocomplete'
        ]); 

My Controller:

 public function autocomplete(Request $request)
    {

        $item = $request->input(['searchname']);
        $results=array();
        $queries = DB::table('courses')
        ->where('name', 'LIKE', '%'.$term.'%')  
        ->take(5)->get();

        foreach ($queries as $data) {
          $results[]=['id'=>$data->id,'value'=>$data->name];
        }
    retu Response::json($results);
    }

My View Page:

 {{ Form::open(['action' => ['UserController@autocomplete'], 'method' => 'GET']) }}
    {{ Form::text('searchname', '', ['id' =>  'searchname', 'placeholder' =>  'Enter name'])}}
    {{ Form::submit('Search', array('class' => 'button expand')) }}
{{ Form::close() }}


    <script type="text/javascript">
    jQuery(document).ready(function($) {
      $('#searchname').autocomplete({
            source:  "/autocomplete" ,
            minlength:1,
            autofocus:true,
            select:function(event,ui){
              $("searchname").val(ui.item.value);
            }
      });
      });
    </script>

So when I search for a item instead of getting item name i'm getting following Error in my console:

GET http://localhost/autocomplete?term=tree 404 (Not Found)

Anyone who can help me to find the solution please?