@proteeti13 I have faced the same problem today. Have you already solved it?

Couldn't solve it. I spent a lot of time figuring out but failed. Now started reading the documentation of Barman :( @greylord1996

@proteeti13 hey, i'm also experiencing the same issue.

In my case (I'm using digital ocean a s3 interpolated object) its because boto is expecting me to insert a aws:kms key despite the fact i'm not running with aws s3.

`Traceback (most recent call last):
File "src/gevent/greenlet.py", line 716, in gevent._greenlet.Greenlet.run
File "/usr/local/lib/python3.6/dist-packages/wal_e/worker/upload.py", line 53, in call
self.gpg_key_id)
File "/usr/local/lib/python3.6/dist-packages/wal_e/worker/worker_util.py", line 40, in do_lzop_put
k = blobstore.uri_put_file(creds, url, tf)
File "/usr/local/lib/python3.6/dist-packages/wal_e/blobstore/s3/s3_util.py", line 57, in uri_put_file
k.set_contents_from_file(fp, encrypt_key=True)
File "/usr/local/lib/python3.6/dist-packages/boto/s3/key.py", line 1309, in set_contents_from_file
chunked_transfer=chunked_transfer, size=size)
File "/usr/local/lib/python3.6/dist-packages/boto/s3/key.py", line 762, in send_file
chunked_transfer=chunked_transfer, size=size)
File "/usr/local/lib/python3.6/dist-packages/boto/s3/key.py", line 963, in _send_file_internal
query_args=query_args
File "/usr/local/lib/python3.6/dist-packages/boto/s3/connection.py", line 671, in make_request
retry_handler=retry_handler
File "/usr/local/lib/python3.6/dist-packages/boto/connection.py", line 1071, in make_request
retry_handler=retry_handler)
File "/usr/local/lib/python3.6/dist-packages/boto/connection.py", line 940, in _mexe
request.body, request.headers)
File "/usr/local/lib/python3.6/dist-packages/boto/s3/key.py", line 896, in sender
response.status, response.reason, body)
boto.exception.S3ResponseError: S3ResponseError: 400 Bad Request

2018-08-06T01:57:45Z <Greenlet "Greenlet-23" at 0x7f4e1882a348: <wal_e.worker.upload.WalUploader object at 0x7f4e188894a8>(<wal_e.worker.pg.wal_transfer.WalSegment object at)> failed with S3ResponseError`

any news here?

Sorry guys. I couldn't solve it :(

just now, noticed that https://github.com/wal-g/wal-g this has configuration regarding kms. maybe that is related