# TotalSegmentator failed to compute – ModuleNotFoundError: No module named 'skimage.morphology'

**URL:** <https://discourse.slicer.org/t/totalsegmentator-failed-to-compute-modulenotfounderror-no-module-named-skimage-morphology/43577>\
**Category:** Support\
**Tags:** segmentation, extensions-manager, module, ai, totalsegmentator\
**Created:** [July 2, 2025, 2:40pm UTC](https://discourse.slicer.org/t/totalsegmentator-failed-to-compute-modulenotfounderror-no-module-named-skimage-morphology/43577 "2025-07-02T14:40:14Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Mael](https://avatars.discourse-cdn.com/v4/letter/m/eada6e/32.png) [@Mael](https://discourse.slicer.org/u/Mael)\
**Post date:** [July 2, 2025, 2:40pm UTC](https://discourse.slicer.org/t/totalsegmentator-failed-to-compute-modulenotfounderror-no-module-named-skimage-morphology/43577/1 "2025-07-02T14:40:14Z")

</div>

Hi everyone,

I’m trying to use the TotalSegmentator extension in 3D Slicer, but I get an error when I try to compute the segmentation.

The error message is:

```auto
ModuleNotFoundError: No module named 'skimage.morphology'

```

It seems quite similar to [this issue](https://discourse.slicer.org/t/totalsegmentator-failed-to-compute-results-returned-non-zero-exit-status-1/38142), except in my case the missing module is _skimage.morphology_ instead of _acvl\_utils_.

Here are my system details:

Windows 11 Home  
Slicer version: 5.9.0

Any ideas on how to fix this? Should I manually install scikit-image somewhere?

Thanks in advance for your help!

 ![Screenshot 2025-07-02 141153](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/4/0/40891cccbaae6445d39e5ed43a28c4e1d9a25502.png)  
 ![Screenshot 2025-07-02 141234](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/1/11e094b2a4b8f19fa6abd7cae15832201b82808c.png)