dompdf and img tag, image wont show

php drupal pdf dompdf

PHP Snippet 1:

global $_dompdf_show_warnings;
$_dompdf_show_warnings = true;      
\Dompdf\Image\Cache::clear(true);
$options = new \Dompdf\Options(['debugPng' => true,'isRemoteEnabled'=>true);
$dompdf->setOptions($options);