RKE1 snapshot to s3 error

I got a problem with a cluster backup to s3. S3 configuration is tested on RKE2 cluster but in RKE1 cluster it errors every time. Where can i find what error is this ? Where can i find some logs to see the error ?. Thx in advanced

There is workaround for same problem:

Unable to take s3 enabled etcd snapshots on rke1 clusters · Issue #36660 · rancher/rancher (github.com)

One possible way to make it work is during creation of cluster set s3 backup. After cluster creation there is no way to change it from local to s3 because of the error Access denied.