App trying to save to weird parts of the filesystem [closed]

1 day ago 4
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I have an app that saves files to either the local folder or to iCloud. I've never had a user report problems with saving before until today, when a Russian user said he's getting the following error message:

You don't have permission to save the file "2026.03.01 GMT+3" in the folder "System"

That's when saving to iCloud. When saving local, he gets:

Error: "usr" couldn't be copied because you don't have permission to access

Obviously my app isn't actually trying to access System or usr. It's just using the standard documents directories. I can't imagine why it would be looking for these unless it was somehow corrupted, which led me to wonder if this is a pirated copy of my app? Or perhaps a jailbroken device? Has anyone has seen an error like this before?

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