Twitter引导模式没有加载，屏幕只是稍微变暗

Question

我有六个模态，但只有前两个有效 - 当我点击其他四个链接时，没有任何反应，屏幕变得稍微变暗。 这是我的代码（＃portfolioModal2工作得很好，但＃portfolioModal3没有＆＃39; t）：

<div class="col-sm-4 col-xs-6 portfolio-item">
<div class="interests">
  <a href="#portfolioModal2" class="portfolio-link" data-toggle="modal">
    <img src="/assets/work1.png" alt="">
  </a>
</div>
</div>

<div class="col-sm-4 col-xs-6 portfolio-item">
<div class="interests">
  <a href="#portfolioModal3" class="portfolio-link" data-toggle="modal">
    <img src="/assets/travelingcover1.png" alt="">
  </a>
</div>
</div>

<div class="portfolio-modal modal fade" id="portfolioModal2" tabindex="-1" role="dialog" aria-hidden="true">
  <div class="modal-content">
    <%= render 'work' %>
  </div>
</div>

<div class="portfolio-modal modal fade" id="portfolioModal3" tabindex="-1" role="dialog" aria-hidden="true">
  <div class="modal-content">
    <%= render 'traveling' %>
  </div>
</div>