title: dompdf: loading html files to render, doesn't work
body: <p>dompdf is not able to generate a pdf from a page of my website. However, I've saved the page and uploaded it as simple static html file, and it worked!</p>
  
  <p>So, I don't know if the issue is with the url, or something else.. this is the error I get:</p>
  
  <blockquote>
    <p>Warning: require_once(/home/o110334/public_html/dompdf/include/firephp.cls.php) [function.require-once]: failed to open stream: No such file or directory in /home/o110334/public_html/dompdf/dompdf_config.inc.php  on line 194</p>
    
    <p>Fatal error: require_once() [function.require]: Failed opening required '/home/o110334/public_html/dompdf/include/firephp.cls.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/o110334/public_html/dompdf/dompdf_config.inc.php  on line 194</p>
  </blockquote>
  
  <p>This is the code:</p>
  
  <pre><code>$file = "admin/store/orders/45/invoice/print"; // doesn't work
  //$file = "invoice_sample2.html"; //it works (same web page, but stored in a html file)
  
  $dompdf = new DOMPDF();
  $dompdf-&gt;load_html_file($file);
  $dompdf-&gt;render();
  $dompdf-&gt;stream("sample.pdf");
  </code></pre>