title: How to uninstall/upgrade Angular CLI?
body: <p>When I try to create a new project with <strong>Angular CLI</strong>, with:</p>
  
  <pre><code>ng n app
  </code></pre>
  
  <p>I get this error:</p>
  
  <blockquote>
    <p>fs.js:640   return binding.open(pathModule._makeLong(path),
    stringToFlags(flags), mode);
                     ^ TypeError: path must be a string or Buffer
        at TypeError (native)</p>
  </blockquote>
  
  <p>How can I upgrade or uninstall <strong>Angular CLI</strong>?</p>