You must specify at least one part

[domenkozar]

Looking at the code it seems like it's sending no body, but that should be probably handled better.

Unhandled exception: ServiceError (ServiceError' {_serviceAbbrev = Abbrev "S3", _serviceStatus = Status {statusCode = 400, statusMessage = "Bad Request"}, _serviceHeaders = [("x-amz-request-id","41C2DA67166068F1"),("x-amz-id-2","mDYgbHPXtA0iDTQebmz1l3nJb25h1kgoI4CTRd8LQdzbBdlz4UUusXuAYTWGtRnUnXqby0ayPm8="),("Content-Type","application/xml"),("Transfer-Encoding","chunked"),("Date","Wed, 18 Dec 2019 23:40:41 GMT"),("Connection","close"),("Server","AmazonS3")], _serviceCode = ErrorCode "InvalidRequest", _serviceMessage = Just (ErrorMessage "You must specify at least one part"), _serviceRequestId = Just (RequestId "41C2DA67166068F1")})