Blank Page when Print to PDF

Hey guys,

I am using a custom print format. But when the PDF print button is being clicked, they get a blank page. I have checked and the server says the install version of wkhtmltopdf is 0.12.1 with the patch. But I feel like the bench doesn’t see it, I have added the hostname to the common site file. I am using a mix of inline CSS and Bootstrap to create the custom template. What can I do?