Cannot Upload Avatars with S3 Storage Enabled (File Exists, Still Fails)

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Hi there — did you ever resolve this?

I’m hitting the exact same symptom on Discourse + S3 (avatars only):
Could not find file in the store located at url: //<bucket>.s3.dualstack.<region>.amazonaws.com/original/1X/<hash>.jpeg

A few details on my setup, in case it matches yours:

  • enable_s3_uploads = true, objects live at original/* and optimized/* (no uploads/default prefix)

  • Access via CloudFront (OAC), bucket itself is private

  • The object does exist at that key; CDN URL works

  • Error occurs only for avatar processing

  • (Possible wrinkle) uploads are encrypted with SSE-KMS

If you found the root cause or a fix (policy change, KMS permissions, bucket path alignment, etc.), could you share what worked? Thanks!