title: Invalid characters passed for attempted conversion while making pdf
body: <p>When i am creating PDF it is showing below error in laravel</p>
  <p>Invalid characters passed for attempted conversion, these have been ignored</p>
  <pre><code>use Barryvdh\DomPDF\PDF as PDF;
  </code></pre>
  <p>My Controller</p>
  <pre><code>public function pdf_invoice($id)
  {
      $order = Order::findOrFail($id);        
      $pdf = \PDF::loadView('admin.order.print', compact('order'));  
      return $pdf-&gt;download($order-&gt;order_number.'.pdf');              
  }
  </code></pre>
  <p>Error Showing in</p>
  <pre><code>dompdf\dompdf\lib\Cpdf.php    
  </code></pre>
  <p>Error Showing in below line of Code</p>
  <pre><code>  if ($c != hexdec($n)) 
   {$data['codeToName'][$c] = $n;}   
  </code></pre>
  <p>Thanks for the help in advance</p>