title: Getting error as warning while installing angular CLI
body: <p>I'm New to this platform.</p>
  
  <p>I installed <code>Node.js</code> but when I try to run command <strong>npm install -g @angular/cli</strong> 
  I received this error:</p>
  
  <pre><code>**npm WARN deprecated mkdirp@0.5.3: Legacy versions of mkdirp are no longer supported. Please update to mkdirp 1.x. (Note that the API surface has changed to use Promises in 1.x.)
  npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
  npm WARN rollback Rolling back @schematics/angular@9.0.6 failed (this is probably harmless): EPERM: operation not permitted, lstat 'C:\Users\Vivek\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@sche**
  </code></pre>
  
  <p>Also when I try to run command for version </p>
  
  <p>it shows me  </p>
  
  <pre><code>**C:\Users\Vivek&gt;ng v
  internal/modules/cjs/loader.js:985
    throw err;
    ^
  Error: Cannot find module 'C:\Users\Vivek\AppData\Roaming\npm\node_modules\@angular\cli\bin\ng'**
  </code></pre>