Fatal error: Uncaught exception 'DOMPDF_Exception' with message 'Requested HTML document contains no data.' in /var/www/html/dompdf/include/frame_tree.cls.php:142 Stack trace: #0 /var/www/html/dompdf/include/dompdf.cls.php(347): Frame_Tree->build_tree() #1 /var/www/html/dompdf/include/dompdf.cls.php(484): DOMPDF->_process_html() #2 /var/www/html/includes/modules/admin_create_pdf.php(40): DOMPDF->render() #3 {main} thrown in /var/www/html/dompdf/include/frame_tree.cls.php on line 142