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Question

Error File does not exist when uploaded through Flow App

  • August 7, 2026
  • 4 replies
  • 40 views

jeroen_hack
Contributor
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Hi Folks,

Almost weekend and we got a bit of a strange situation. We have a Flow App that is being used by most of our users. They upload a GeoJSON and select if they want Aerial Imagery or Topographic Background. The result is a generated PDF Map.

This process works fine for all but one user. When this user uploads a GeoJSON we see in the log the following error:

90	2026-8-7 15:44:02 | GEOJSON Reader: The file 'C:\ProgramData\Safe Software\FMEFlow\resources\system\temp\upload\[Projectname]\[Workspacename]\auth-user\[USERNAME]\508a819f-ee99-bb88-9785-82b3a169082e\[GeoJSONname]' does not exist
91 2026-8-7 15:44:02 | An error has occurred. Check the logfile above for details

If any other user uses the same GeoJSON file the process works fine.

We checked the following:

  • User rights are identical
  • The GeoJSON is valid (others can use it fine)
  • We checked the timestamps in the DataUpload log with the Job Log and the file is uploaded before it's read.
  • We checked with the user where it doesnt work if they do anything different then users where it worksΒ and they use an identical process for uploading the file (drag from File Explorer)

Anybody have any idea what could cause this?

4 replies

redgeographics
VIP
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Can you navigate to that file location and see if it’s actually there?

Trying to think of what could be the difference here. Any special characters in the username perhaps?


jeroen_hack
Contributor
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  • Author
  • Contributor
  • August 11, 2026

Can you navigate to that file location and see if it’s actually there?

Trying to think of what could be the difference here. Any special characters in the username perhaps?

We ended up figuring out it was the path length. The total path for the uploaded file was 261 characters long (due to the user having the longest name within the company). As soon as we shortened the uploaded file name it worked like a charm.


redgeographics
VIP
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Ah yes, the max path length issueΒ πŸ˜…

There is a way to override this:Β https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation?tabs=registry


jeroen_hack
Contributor
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  • Author
  • Contributor
  • August 11, 2026

Oh thats good to know for future max path length issue's. I'll look into this.

For now the fix was to shorten the name of the GeoJSON. Easy enough fix since this gets generated by another tool.