Our image upload to S3 setup has been working fine. But we have been seeing dozens of daily warnings under /logs like this:
Could not update ACL on upload with key: 'optimized/4X/6/4/9/649327b582f9a24f72e1eeac95ec9133f9a25384_2_340x453.jpeg'. Upload is missing.
I thought I had missed some S3 permissions, so I have reviewed our permissions according to this How-to. And at this point, everything is pretty much exactly the same and we are still getting loads of these warnings.
Anyone else getting these errors under /logs? Any idea why they are being triggered (looking at the code it seems file is missing from S3?) when, otherwise, everything appears to be working as expected?