Upload Proofs error

[LikesCow]

Hello Admin,

I'm having problem when trying to upload the Upload Proofs on Proof section.

Below is the error message I've got:
ERROR: Image wasn't uploaded, please contact site admin!

What folder should I chmod in order to get it to work? Or what do I do to get this to work?

Thanks

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Never mind,
I had to create a new folder in files/proofs with chmod 777 and it works fine