title: Wordpress plugin install: Could not create directory
body: <p>I'm using WordPress on centos 6.</p>
  
  <p>I try to install a plugin. But I got this error:</p>
  
  <blockquote>
    <p>Installing Plugin: bbPress 2.5.9
    Downloading install package from <a href="https://downloads.wordpress.org/plugin/bbpress.2.5.9.zip" rel="noreferrer">https://downloads.wordpress.org/plugin/bbpress.2.5.9.zip</a>…</p>
    
    <p>Unpacking the package…</p>
    
    <p>Could not create directory.</p>
  </blockquote>
  
  <p>How can I resolve this?</p>
  
  <p>P/S: I run this command:</p>
  
  <pre><code>sudo -u root touch /var/www/html/wordpress/wp-content/plugins/test.txt
  </code></pre>
  
  <p>and it works. But I still get that error.</p>