# ArgumentError: Package REPLExt \[e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b\] is required but does not seem to be installed

**URL:** <https://discourse.julialang.org/t/argumenterror-package-replext-e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b-is-required-but-does-not-seem-to-be-installed/121492>\
**Category:** New to Julia\
**Created:** [October 19, 2024, 7:40pm UTC](https://discourse.julialang.org/t/argumenterror-package-replext-e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b-is-required-but-does-not-seem-to-be-installed/121492 "2024-10-19T19:40:18Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![n\_a\_n\_a](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/n_a_n_a/32/212742_2.png) [@n\_a\_n\_a](https://discourse.julialang.org/u/n_a_n_a)\
**Post date:** [October 19, 2024, 7:40pm UTC](https://discourse.julialang.org/t/argumenterror-package-replext-e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b-is-required-but-does-not-seem-to-be-installed/121492/1 "2024-10-19T19:40:19Z")

</div>

I’m having this issue in VSCode, not sure exactly what is going on, I am quite clueless.

 ![image](https://global.discourse-cdn.com/julialang/original/3X/f/c/fca4f5cad23f9fc426c24d435dc56719db266c09.png)

---

<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:** [October 19, 2024, 7:55pm UTC](https://discourse.julialang.org/t/argumenterror-package-replext-e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b-is-required-but-does-not-seem-to-be-installed/121492/2 "2024-10-19T19:55:31Z")

</div>

Might be this bug: [REPLExt: no method matching repl\_init(::REPL.LineEditREPL) when loading packages in REPL mode. · Issue #56216 · JuliaLang/julia · GitHub](https://github.com/JuliaLang/julia/issues/56216)

If you are a beginner, I would stick with Julia 1.10 for now, 1.11 still has some bugs that need to be ironed out.

```julia
juliaup add 1.10
juliaup default 1.10

```

---

<div class="post-metadata">

**Author:** ![n\_a\_n\_a](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/n_a_n_a/32/212742_2.png) [@n\_a\_n\_a](https://discourse.julialang.org/u/n_a_n_a)\
**Post date:** [October 22, 2024, 10:09pm UTC](https://discourse.julialang.org/t/argumenterror-package-replext-e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b-is-required-but-does-not-seem-to-be-installed/121492/3 "2024-10-22T22:09:53Z")

</div>

Thanks, can’t recall exactly how but I’ve fixed the issue now.

---

<div class="post-metadata">

**Author:** ![Dral](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/dral/32/25885_2.png) [@Dral](https://discourse.julialang.org/u/Dral)\
**Post date:** [March 17, 2025, 8:09pm UTC](https://discourse.julialang.org/t/argumenterror-package-replext-e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b-is-required-but-does-not-seem-to-be-installed/121492/4 "2025-03-17T20:09:15Z")

</div>

For others running into this (as I did today):  
Running `import Pkg` in a separate Julia repl fixed it for me.

---

<div class="post-metadata">

**Author:** ![sairus7](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/sairus7/32/10816_2.png) [@sairus7](https://discourse.julialang.org/u/sairus7)\
**Post date:** [April 23, 2025, 11:08am UTC](https://discourse.julialang.org/t/argumenterror-package-replext-e5eb5ef1-03cf-53a7-ae1d-5a66b08e832b-is-required-but-does-not-seem-to-be-installed/121492/5 "2025-04-23T11:08:49Z")

</div>

I run into the same error with fresh empty 1.11 environment. Adding any package in a separate repl fixed the problem.