# An error message coming out when reopen the VS Code

**URL:** <https://discourse.pumas.ai/t/an-error-message-coming-out-when-reopen-the-vs-code/1353>\
**Category:** Installation\
**Created:** [January 23, 2026, 3:28am UTC](https://discourse.pumas.ai/t/an-error-message-coming-out-when-reopen-the-vs-code/1353 "2026-01-23T03:28:37Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![vijay](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pumas.ai/vijay/32/96_2.png) [@vijay](https://discourse.pumas.ai/u/vijay)\
**Post date:** [February 9, 2026, 4:40am UTC](https://discourse.pumas.ai/t/an-error-message-coming-out-when-reopen-the-vs-code/1353/12 "2026-02-09T04:40:08Z")

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@izang can you please follow the instructions here. It seems that your default julia is not the version that Pumas needs. Follow the instructions here and that should resolve it.

> [@Pumas installation error](https://discourse.pumas.ai/t/pumas-installation-error/1267/8):
>
> Please make sure your old installation of Pumas 2.6.1 is removed from Add/Remove programs open a new terminal (command prompt). type juliaup status check if the \* is set next to julia 1.11.7 or 1.11.6 or something else? It has to be set to Pumas@2.7.1 or Pumas@2.7.0 , whichever one you installed. to do this, you need to do juliaup default Pumas@2.7.1 check juliaup status again and now the `*` should be beside Pumas.. restart vscode Now start julia REPL and let us know what comes up

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_[View the full topic](https://discourse.pumas.ai/t/an-error-message-coming-out-when-reopen-the-vs-code/1353)._