Lightbox無法在laravel應用程序中工作

我試圖在laravel中實現燈箱，但它不會從lightbox css文件中加載箭頭（左，右...）。Fancybox我遇到了問題，當我單擊在圖像上，大小溢出了1,2秒，然後它出現在屏幕中心的正常大小（我有下圖）。箭頭路徑public/lightbox/img。Lightbox無法在laravel應用程序中工作

下面是我的代碼

default.blade.php

<title>My personal website</title> 
    <link rel="shortcut icon" href="{{ asset('favicon.png') }}" > 
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> 
    <link href="http://maxcdn.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css" rel="stylesheet"/> 
    <link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet"> 
    <link rel="stylesheet" href="{{ asset('css/style.css') }}" type="text/css"/> 
    <link rel="stylesheet" href="{{ asset('css/lightbox.css') }}" type="text/css"/> 

</head> 
<body> 

    <div class="container"> 
    <header> 
     @include('template.partial.nav') 
    </header> 
     @yield('content') 
    </div> 

    @include('template.partial.footer') 

    <!-- ***Scripts*** --> 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> 

    <!-- Add fancyBox --> 
    <script type="text/javascript" src="js/lightbox.min.js"></script> 

    <!-- Latest compiled and minified JavaScript --> 
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> 

    <script type="text/javascript" src="{{ asset('js/test.js') }}"></script> 

</body> 
</html>

portfolio.blade.php

@extends('template.default') 

@section('content') 
<div id="portfolio"> 
    <div class="row"> 
     <p class="heading">Portfolio</p> 
    </div> 
    <div class="row"> 
     <div class="col-md-12"> 
     <p class="subheading">Java application</p> 
     <hr> 
     <h2 style="text-align:center">Lightbox</h2> 
     <a data-lightbox="roadtrip" href="{{ asset('lightbox/img/demopage/rsz_java1.png') }}"> 
      <img src="{{ asset('lightbox/img/demopage/java1.png') }}" width="150" height="100"> 
     </a> 
     <a data-lightbox="roadtrip" href="{{ asset('lightbox/img/demopage/rsz_java1.png') }}"> 
      <img src="{{ asset('lightbox/img/demopage/java1.png') }}" width="150" height="100"> 
     </a> 
     </div> 
     </div> 

@endsection

控制檯錯誤：

portfolio:1 GET http://{projectname}/img/next.png 404 (Not Found) 
portfolio:1 GET http://{projectname}/img/close.png 404 (Not Found) 
portfolio:1 GET http://{projectname}/img/loading.gif 404 (Not Found) 
portfolio:1 GET http://{projectname}/img/prev.png 404 (Not Found)

提前感謝！