Laravel Not Accessing The Request of data post

here i create a form in Laravel to post request through route "posts.store" to the controller "PostsController"

        {!! Form::open(['url' => 'posts.store']) !!}
            
            
            
            
            
        {!! Form::close() !!}

enter image description here

This is the "PostsController" where i am trying to access my request which throughs an error:

public function store(Request $request)
    {
        //validate data
        $this-> validate($request, array(
            'title' => 'required|max:255',
            'body'  => 'required'

            ));
        //Store data into database
        $post = new Post;

        $post->title = $request->title;
        $post->body = $request->body;
        $post->save();

        return redirect()->route('posts.show', $post->id);
    }

when i submit the form the following page is appearing (1/1) NotFoundHttpException

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