title: CakePHP dompdf image crash
body: <p>Whenever I try to insert an image into a PDF, the whole PDF file crashes. (Google Chrome says, 'Failed to load PDF document', and the network response is empty.)</p>
  
  <p>I am using the dompdf plugin for cakephp, and the error is definitely not due to dompdf not finding the images. When the source attribute points to a non-existing image, it just shows a square rectangle. When, on the other hand, the path is correct, or I provide the source using the 'data:…;base64,…' notation, the whole PDF crashes.</p>
  
  <p>I have increased the maximum resolution to 300dpi in Config/dompdf.php , but it still didn't work. Any ideas?</p>