Cannot upload to Backblaze B2 using S3 API

[Charles Roper]

I can connect to my Backblaze buckets just fine, but if I try to upload files, I get an error.

I've tried another client (S3 Browser) and this works fine. Also using a B2 direct connection in Cyberduck is fine. I want to use an S3 connection because the Web URL config setting does not work with B2 connections.

Does anyone know a way around this problem or is it a bug in Cyberduck?

Many thanks.

[David Kocher]

Try to set Preferences → S3 → Default ACL → None.

— David