title: Class DataTable not found in laravel
body: <p>I try to install Laravel DataTable and after I run command </p>
  
  <p>php artisan vendor:publish
  and then it get error and I use laravel 5.4</p>
  
  <pre><code>    [Symfony\Component\Debug\Exception\FatalThrowableError]
        Class 'Yajra\Datatables\DatatablesServiceProvider' not found
  </code></pre>