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The error you are getting would help if you can show me, but if you are referring to creating a PDF form, you can use 'Create PDF form' option from your JotForm menu.
You can try by following this steps in the link:
Please let me know if you need any additional help.
I tried it with one of your forms and it worked for me.
Can you please let us know which form that is showing an error?
We'll await your reply.