PDF creation not working

Trying to create a few pdf versions of a few forms. the wait has been long and its only worked for 2 of 6 forms i needed pdfs for. I have attached a screenshot of an error message i am now receiving. i have tried creating pdfs on two different browsers already with the same result. 

Sorry for inconvenience this may caused you.

I saw that you reported same issue a week ago on this thread http://www.jotform.com/answers/699729

My colleague escalated this issue to our developers. One of our developers is assigned to your issue and that ticket is marked as urgent. 

We will inform you on that thread once this issue is resolved.

Thank you for your patience.