title: Composer require gives errors while installing barryvdh/laravel-dompdf
body: <p>I'm quite new with Laravel and wrote my first app.</p>
  <p>I'm using Laravel 5.4 with PHP 7.1.5 on Windows, but when I run the <code>composer require barryvdh/laravel-dompdf</code> command, I get following issues. I have followed many &quot;possible solutions&quot; but still it is not working.</p>
  <p>This is the error:</p>
  <blockquote>
  <p>Your requirements could not be resolved to an installable set of
  packages.</p>
  <p>Problem 1
  - Installation request for barryvdh/laravel-dompdf ^0.8.1 -&gt; satisfiable by barryvdh/laravel-dom<br />
  pdf[v0.8.1].
  - barryvdh/laravel-dompdf v0.8.1 requires dompdf/dompdf ^0.8 -&gt; satisfiable by dompdf/dompdf[v0.<br />
  8.0, v0.8.1, v0.8.2] but these conflict with your requirements or minimum-stability.</p>
  </blockquote>