# Using AWSS3.jl getting the following error

**URL:** https://discourse.julialang.org/t/using-awss3-jl-getting-the-following-error/79497
**Category:** General Usage
**Created:** [April 14, 2022, 3:31pm UTC](https://discourse.julialang.org/t/using-awss3-jl-getting-the-following-error/79497 "2022-04-14T15:31:27Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Impressium](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/impressium/32/19575_2.png) [@Impressium](https://discourse.julialang.org/u/Impressium)
#### Post date: [April 14, 2022, 3:31pm UTC](https://discourse.julialang.org/t/using-awss3-jl-getting-the-following-error/79497/1 "2022-04-14T15:31:27Z")

</div>

Hi all 🙂

I’m debugging this error now for a while. I think it’s related with a different post I made a while ago.  
So I’m using a couple of threads to do stuff async. Once in while the main/ starting thread just stops. But two or three already started threads run fine. This time all the above happened and the whole script crashed with the following error.

```julia
nested task error: AWS.AWSExceptions.AWSException: 400 -- AWSException

    HTTP.ExceptionRequest.StatusError(400, "PUT", "/company-snowflake/TT/Prod/ProjectName/FILLED_DATA.bytes", HTTP.Messages.Response:
    """
    HTTP/1.1 400 Bad Request
    x-amz-request-id: <random string>
    x-amz-id-2: <random string>
    Content-Type: application/xml
    Transfer-Encoding: chunked
    Date: Thu, 07 Apr 2022 17:08:28 GMT
    Server: AmazonS3
    Connection: close

    [Message Body was streamed]""")

    (empty body)

    Stacktrace:
      [1] request(::Type{HTTP.ExceptionRequest.ExceptionLayer{HTTP.ConnectionRequest.ConnectionPoolLayer{HTTP.StreamRequest.StreamLayer{Union{}}}}}, ::URIs.URI, ::Vararg{Any, N} where N; kw::Base.Iterators.Pairs{Symbol, Any, Tuple{Symbol, Symbol, Symbol}, NamedTuple{(:iofunction, :require_ssl_verification, :response_stream), Tuple{Nothing, Bool, Base.BufferStream}}})
        @ HTTP.ExceptionRequest C:\.julia\packages\HTTP\qszg7\src\ExceptionRequest.jl:22
      [2] request(::Type{HTTP.MessageRequest.MessageLayer{HTTP.ExceptionRequest.ExceptionLayer{HTTP.ConnectionRequest.ConnectionPoolLayer{HTTP.StreamRequest.StreamLayer{Union{}}}}}}, method::String, url::URIs.URI, headers::Vector{Pair{SubString{String}, SubString{String}}}, body::Vector{UInt8}; http_version::VersionNumber, target::String, parent::Nothing, iofunction::Nothing, kw::Base.Iterators.Pairs{Symbol, Any, Tuple{Symbol, Symbol}, NamedTuple{(:require_ssl_verification, :response_stream), Tuple{Bool, Base.BufferStream}}})
        @ HTTP.MessageRequest C:\.julia\packages\HTTP\qszg7\src\MessageRequest.jl:66
      [3] request(::Type{HTTP.BasicAuthRequest.BasicAuthLayer{HTTP.MessageRequest.MessageLayer{HTTP.ExceptionRequest.ExceptionLayer{HTTP.ConnectionRequest.ConnectionPoolLayer{HTTP.StreamRequest.StreamLayer{Union{}}}}}}}, method::String, url::URIs.URI, headers::Vector{Pair{SubString{String}, SubString{String}}}, body::Vector{UInt8}; kw::Base.Iterators.Pairs{Symbol, Any, Tuple{Symbol, Symbol}, NamedTuple{(:require_ssl_verification, :response_stream), Tuple{Bool, Base.BufferStream}}})
        @ HTTP.BasicAuthRequest C:\.julia\packages\HTTP\qszg7\src\BasicAuthRequest.jl:28
      [4] #request#1
        @ C:\.julia\packages\HTTP\qszg7\src\TopRequest.jl:15 [inlined]
      [5] macro expansion
        @ C:\.julia\packages\Mocking\MsKoy\src\mock.jl:29 [inlined]
      [6] macro expansion
        @ C:\.julia\packages\AWS\1kisM\src\utilities\request.jl:161 [inlined]
      [7] macro expansion
        @ C:\.julia\packages\Retry\vS1bg\src\repeat_try.jl:192 [inlined]
      [8] _http_request(http_backend::AWS.HTTPBackend, request::AWS.Request, response_stream::IOBuffer)
        @ AWS C:\.julia\packages\AWS\1kisM\src\utilities\request.jl:147
      [9] macro expansion
        @ C:\.julia\packages\Mocking\MsKoy\src\mock.jl:29 [inlined]
     [10] macro expansion
        @ C:\.julia\packages\AWS\1kisM\src\utilities\request.jl:88 [inlined]
     [11] macro expansion
        @ C:\.julia\packages\Retry\vS1bg\src\repeat_try.jl:192 [inlined]
     [12] submit_request(aws::AWS.AWSConfig, request::AWS.Request; return_headers::Nothing)
        @ AWS C:\.julia\packages\AWS\1kisM\src\utilities\request.jl:85
     [13] (::AWS.RestXMLService)(request_method::String, request_uri::String, args::Dict{String, Any}; aws_config::AWS.AWSConfig, feature_set::AWS.FeatureSet)
        @ AWS C:\.julia\packages\AWS\1kisM\src\AWS.jl:284
     [14] #put_object#170

```

Thank you for you help

---

<div class="post-metadata">

### Author: ![ericphanson](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ericphanson/32/215186_2.png) [@ericphanson](https://discourse.julialang.org/u/ericphanson)
#### Post date: [April 14, 2022, 4:51pm UTC](https://discourse.julialang.org/t/using-awss3-jl-getting-the-following-error/79497/2 "2022-04-14T16:51:34Z")

</div>

As far as I can find (and I’ve spent some time on it) _release_ versions of Julia do not have access to a working multithreaded HTTP client. With AWS.jl, you can use HTTP.jl or Downloads.jl but both have issues; see [Backends · AWS.jl](https://juliacloud.github.io/AWS.jl/dev/backends.html) for the documentation on that.

Julia 1.8 and Julia 1.7.3 (unreleased) have multithreading fixes for Downloads.jl, which could fix this if you use one of those versions and switch to the Downloads backend for AWS.jl.