Error: failed: client.BucketExists: 400 Bad Request

[vfolk30]

Hello Expert.

I have installed k8up in my k8s environment with S3 storage.
I am testing backup by following tutorial https://k8up.io/k8up/2.3/tutorials/tutorial.html and got an issue with restic.

I NFO k8up.restic initializing
INFO k8up.restic setting up a signal handler
INFO k8up.restic.restic using the following restic options {"options": [""]}
INFO k8up.restic.restic.RepoInit.command restic command {"path": "/usr/local/bin/restic", "args": ["init", "--option", ""]}
INFO k8up.restic.restic.RepoInit.command Defining RESTIC_PROGRESS_FPS {"frequency": 0.016666666666666666}
INFO ### k8up.restic.restic.RepoInit.restic.stderr Fatal: create repository at s3:http://s3-endpoint/mybucket failed: client.BucketExists: 400 Bad Request
INFO k8up.restic.restic.RepoInit.restic.stderr
unable to start k8up: failed to initialise the restic repository: cmd.Wait() err: 1

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my understanding is that restic is not grabbing AWS credentials properly

Could you please provide some input to solve this problem.