title: Can´t add Bootstrap 4 in Angular 6
body: <p>I have the problem when I try to add the latest bootstrap version with </p>
  
  <pre><code>npm install bootstrap
  </code></pre>
  
  <p>After that, I got an error message when I tried to run it.</p>
  
  <pre><code>ng serve --open
  </code></pre>
  
  <p>I Add Bootstrap in angular.json</p>
  
  <p>like this</p>
  
  <pre><code>"styles": [
            "../node_modules/bootstrap/dist/css/bootstrap.min.css",
            "src/styles.css"
          ],
  </code></pre>
  
  <p>And the error message is </p>
  
  <pre><code>    ERROR in multi ../node_modules/bootstrap/dist/css/bootstrap.min.css ./src/styles.css
  Module not found: Error: Can't resolve '...\node_modules\bootstrap\dist\css\bootstrap.min.css' in '...'
  </code></pre>
  
  <p>Why did I get the error message?</p>