I am using laravel 4..

Receiving error "Symfony \ Component \ HttpKernel \ Exception \ NotFoundHttpException", but reason ?

the model update is not working. Here the code:

// Routing
Route::any('projects/update?{slug}', array('as' => 'projects.update', 'uses' => 'ProjectsController@update'));

// Form blade update
{{ Form::model($project, [
	'method' => 'PATCH', 
	'route' => ['projects.update', $project->slug ],
	'files' => true
    ]) 
}}
{{ Form::close() }}

// Controller
public function update($slug)
{
	$this->project->whereSlug($slug)->first();
        $this->project->fill(Input::all());
        $this->project->save();
}

hope someone know, why i am facing this.