N8n from trigger Problem submitting response

My form collects files and then uploads them to Microsoft OneDrive. The issue is that quite often it doesn’t work as expected and I get an error.

When I start the workflow manually, everything works perfectly.
What could be the cause of this inconsistency?

Hey, could you share your workflow? Also, can you provide one such example file that fails? It will also be great, if you can:

  • try to upload the file in the form (make it fullscreen)
  • if it fails, open web tools inside the form window (F12)
  • screenshot any errors you see in the Console tab

So I cannot share files unfortunately, but every time I use the same set of 5 files. That is my workflow:

And here is the console log when it fails:

Thank you, also could you let me know:

  • if the form fails with any file? like an image?
  • if you make a new workflow with just the form trigger does it fail too?

Another interesting facts to know would be

  • whether the same happens if you upload only one file (if that works - does it work consistently)
  • what is the total average size in MB of the files that are being uploaded
  • what is the error in n8n for when you upload your files. We see what happens in the console, but what happens in n8n?
  • you mentioned it happens quite often, how often? did you happen to see a pattern in that behaviour? Larger documents or certain file types.

I think you could be hitting the resource limits for the cloud instance.

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