# Can not run Pumas

**URL:** https://discourse.pumas.ai/t/can-not-run-pumas/1323
**Category:** Installation
**Created:** [November 8, 2025, 6:06pm UTC](https://discourse.pumas.ai/t/can-not-run-pumas/1323 "2025-11-08T18:06:25Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Yao28-DD](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pumas.ai/yao28-dd/32/616_2.png) [@Yao28-DD](https://discourse.pumas.ai/u/Yao28-DD)
#### Post date: [November 8, 2025, 6:06pm UTC](https://discourse.pumas.ai/t/can-not-run-pumas/1323/1 "2025-11-08T18:06:25Z")

</div>

![image](https://canada1.discourse-cdn.com/flex030/uploads/pumas/original/1X/45b26edaef06d06ec179224d25085a981a1e4cf3.png)

When I run Pumas, I encounter this error. Does anyone know how to fix this? Thank you so much!

Best regards,

Yao

---

<div class="post-metadata">

### Author: ![Michael](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.pumas.ai/michael/32/818_2.png) [@Michael](https://discourse.pumas.ai/u/Michael)
#### Post date: [November 11, 2025, 8:03am UTC](https://discourse.pumas.ai/t/can-not-run-pumas/1323/3 "2025-11-11T08:03:12Z")

</div>

Good morning Yao,

Thanks for reporting this. While we investigate a more comprehensive fix for this can you try removing that folder `C:\Users\yaooz\.julia\packages\NCA` and then perform the install steps for Pumas 2.7.1 again. If you see other similar errors appear for other packages then perform the same steps of removing the folders (like for NCA) and run the install steps again.

Kind regards,  
Michael Hatherly