title: Unable to read current working directory: Operation not permitted
body: <p>I am a beginner. I try to use git to create the user's name. but when I typed </p>
  
  <pre><code>git config --global user.name "XXX"
  </code></pre>
  
  <p>the message shows</p>
  
  <blockquote>
    <p>Unable to read current working directory: Operation not permitted.</p>
  </blockquote>
  
  <p>I don't know what happened. How can I fix this problem?</p>