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Question

PDF filler with PDF.co won't allow empty image url

  • August 8, 2025
  • 2 replies
  • 20 views
T

Hi,

I use the PDF Filler action of PDF.co to fill a PDF file with WPForms entries.

Image fields are optional so the checkbox “Allow Empty Text and Image Objects” is checked.

It was working great until 08/03/2025.

I have not edited my zap but today, 5 days later, all empty optional image fields have the following error: “Parameter "url" (position 4) must be a non-empty string”.

Same error when the checkbox is unchecked.

I try to regenerate the previous succeeded PDF, same error.

I need help !

Thanks

 

This post has been closed for comments. Please create a new post if you need help or have a question about this topic.

2 replies

Troy Tessalone
Zapier Orchestrator & Solution Partner
Forum|alt.badge.img+14
  • Troy TessaloneZapier Orchestrator & Solution Partner
  • Zapier Orchestrator & Solution Partner
  • 34068 replies
  • August 8, 2025

Hi ​@tipikae 

Try these options:

⚡ Troy Tessalone - AutomationAce.com | Platinum Authorized Zapier Solution Partner | #1 Zapier Community Contributor
SamB
Community Manager
Forum|alt.badge.img+11
  • SamBCommunity Manager
  • Community Manager
  • 9736 replies
  • August 22, 2025

Hey there, ​@tipikae 👋

Just stumbled across this and saw you reached out to our Support team and it seems PDF.co were able to implement a fix on their end. 🎉

Out of curiosity, was the fix they made to “their module” specific to your PDF.co account, or to the PDF.co app in general? Just wondering whether folks would need to reach out to PDF.co directly to get a similar fix in place if they run into the same issue.

Looking forward to hearing from you! 

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