# Unable to automatically download/install artifact

**URL:** <https://discourse.julialang.org/t/unable-to-automatically-download-install-artifact/108814>\
**Category:** New to Julia\
**Tags:** question, package\
**Created:** [January 15, 2024, 5:47am UTC](https://discourse.julialang.org/t/unable-to-automatically-download-install-artifact/108814 "2024-01-15T05:47:20Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![TalesOliveira](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/talesoliveira/32/206224_2.png) [@TalesOliveira](https://discourse.julialang.org/u/TalesOliveira)\
**Post date:** [January 15, 2024, 5:47am UTC](https://discourse.julialang.org/t/unable-to-automatically-download-install-artifact/108814/1 "2024-01-15T05:47:20Z")

</div>

I’m trying to install the LLVM package for the [DataScience](https://juliaacademy.com/courses/enrolled/937702), course, but I’m getting this error:

```julia
ERROR: Unable to automatically download/install artifact 'vegalite_app' from sources listed in 'C:\Users\tales\.julia\packages\Vega\NBNbC\Artifacts.toml'.
Sources attempted:
- https://pkg.julialang.org/artifact/793fcbdad1beb02a41d65f455c195c99cc2f3c1d
    Error: Tree Hash Mismatch!
  Expected git-tree-sha1: 793fcbdad1beb02a41d65f455c195c99cc2f3c1d
  Calculated git-tree-sha1: cd0ec874eaa6316afce4d9c94cdd8570aea6b59b
- https://github.com/queryverse/VegaLiteBuilder/releases/download/v3.4.1/vegaliteassets-3.4.1-x86_64-w64-mingw32.tar.gz
    Error: Tree Hash Mismatch!
  Expected git-tree-sha1: 793fcbdad1beb02a41d65f455c195c99cc2f3c1d
  Calculated git-tree-sha1: a7ffd4d1d6489fb2ba21cdf0d2cd1efcd44cf86c

```

I’ve already done:

`Pkg.gc()`  
`ENV["JULIA_SSL_NO_VERIFY_HOSTS"] = "github.com"`  
`Pkg.update()`  
`Pkg.add("LLVM")`

but didnot worked

---

<div class="post-metadata">

**Author:** ![ufechner7](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ufechner7/32/51363_2.png) [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Post date:** [January 15, 2024, 7:03am UTC](https://discourse.julialang.org/t/unable-to-automatically-download-install-artifact/108814/2 "2024-01-15T07:03:47Z")

</div>

What is the output of:

```julia
using Pkg
Pkg.status()

```

And the output of:

```julia
versioninfo()

```

?

---

<div class="post-metadata">

**Author:** ![giordano](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/giordano/32/2166_2.png) [@giordano](https://discourse.julialang.org/u/giordano)\
**Post date:** [January 15, 2024, 8:30am UTC](https://discourse.julialang.org/t/unable-to-automatically-download-install-artifact/108814/3 "2024-01-15T08:30:05Z")

</div>

Issue is [Artifact hash mismatch with P4est\_jll on Julia v1.10 · Issue #3643 · JuliaLang/Pkg.jl · GitHub](https://github.com/JuliaLang/Pkg.jl/issues/3643)

> [@Cannot instantiate env in Julia 1.10: adwaita\_icon\_theme\_jll git tree hash error - anyone else?](https://discourse.julialang.org/t/cannot-instantiate-env-in-julia-1-10-adwaita-icon-theme-jll-git-tree-hash-error-anyone-else/108105/5):
>
> As a temporary workaround until the issue is properly resolved you can try setting the environment variable [JULIA\_PKG\_IGNORE\_HASHES](https://docs.julialang.org/en/v1/manual/environment-variables/#JULIA_PKG_IGNORE_HASHES) to true (no idea how to do that on Windows).

---

<div class="post-metadata">

**Author:** ![TalesOliveira](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/talesoliveira/32/206224_2.png) [@TalesOliveira](https://discourse.julialang.org/u/TalesOliveira)\
**Post date:** [January 16, 2024, 7:47am UTC](https://discourse.julialang.org/t/unable-to-automatically-download-install-artifact/108814/4 "2024-01-16T07:47:40Z")

</div>

Thanks!!