Are you getting the error as soon as you visit /admin/backups? I didn’t change anything in that area recently, but we updated the aws-s3 gem between beta8 and beta10 from version 1.36.1 to 1.60.1. It’s possible that this doesn’t work with Google buckets anymore. Maybe you find the cause in the CHANGELOG. You could test with different versions of the gem to narrow it down.