title: An internal error occurred during: "Updating Maven Project". java.lang.NullPointerException
body: <p>I'm developing a Java EE web project. When I try to add a dependency, this error message appears. I use Eclipse Kepler.</p>
  
  <blockquote>
    <p>An internal error occurred during: "Updating Maven Project". java.lang.NullPointerException</p>
  </blockquote>
  
  <p>Could you help me?
  Thank you.</p>
  
  <p><img src="https://i.stack.imgur.com/uGiOI.jpg" alt="enter image description here"></p>