# UndefVarError: \`##272\` not defined

**URL:** <https://discourse.julialang.org/t/undefvarerror-272-not-defined/112813>\
**Category:** New to Julia\
**Tags:** question\
**Created:** [April 11, 2024, 1:48am UTC](https://discourse.julialang.org/t/undefvarerror-272-not-defined/112813 "2024-04-11T01:48:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![queueyong](https://avatars.discourse-cdn.com/v4/letter/q/898d66/32.png) [@queueyong](https://discourse.julialang.org/u/queueyong)\
**Post date:** [April 11, 2024, 1:48am UTC](https://discourse.julialang.org/t/undefvarerror-272-not-defined/112813/1 "2024-04-11T01:48:44Z")

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I installed latest julia version 1.10.2 and encountered error messages for every line of code with “UndefVarError: `##272` not defined.” Cannot find someone who has similar issue by searching.

 ![image](https://global.discourse-cdn.com/julialang/original/3X/1/b/1b18dce6a9fe3400fd2ce04f42fae969777a7dea.png)

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**Author:** ![CameronBieganek](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cameronbieganek/32/6915_2.png) [@CameronBieganek](https://discourse.julialang.org/u/CameronBieganek)\
**Post date:** [April 11, 2024, 11:45am UTC](https://discourse.julialang.org/t/undefvarerror-272-not-defined/112813/2 "2024-04-11T11:45:36Z")

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That’s an odd error. Are you using VS Code or Atom? The Atom IDE isn’t really supported anymore.

Can you launch a terminal on your machine, start Julia in the terminal, and then run that code in the Julia session?

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<div class="post-metadata">

**Author:** ![queueyong](https://avatars.discourse-cdn.com/v4/letter/q/898d66/32.png) [@queueyong](https://discourse.julialang.org/u/queueyong)\
**Post date:** [April 12, 2024, 12:41pm UTC](https://discourse.julialang.org/t/undefvarerror-272-not-defined/112813/3 "2024-04-12T12:41:52Z")

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Right, I am still using Atom IDE as I feel more comfortable than VS Code.

After downgrading julia version 1.7.3 (that I used to use before installing 1.10.2) it works on Atom without errors. Maybe I need to move to VS Code soon for avoiding such errors as well as up-to-dated.

Thanks for the answer.