# TotalSegmentator error at first run: returned non-zero exit status 120.
**URL:** https://discourse.slicer.org/t/totalsegmentator-error-at-first-run-returned-non-zero-exit-status-120/34439
**Category:** Support
**Tags:** segmentation
**Created:** [February 20, 2024, 11:22pm UTC](https://discourse.slicer.org/t/totalsegmentator-error-at-first-run-returned-non-zero-exit-status-120/34439 "2024-02-20T23:22:52Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Rolling](https://discourse.slicer.org/u/Rolling)
#### Post date: [February 20, 2024, 11:22pm UTC](https://discourse.slicer.org/t/totalsegmentator-error-at-first-run-returned-non-zero-exit-status-120/34439/1 "2024-02-20T23:22:52Z")
Dear all
I tried to use the TotalSegmentator in 3D slicer, but I got an error：
Failed to compute results.
Traceback (most recent call last):
File “E:\3D Slicer\Slicer 5.6.1\bin\Python\slicer\util.py”, line 3255, in tryWithErrorDisplay
yield
File “E:/3D Slicer/Slicer 5.6.1/slicer.org/Extensions-32438/TotalSegmentator/lib/Slicer-5.6/qt-scripted-modules/TotalSegmentator.py”, line 292, in onApplyButton
self.logic.process(self.ui.inputVolumeSelector.currentNode(), self.ui.outputSegmentationSelector.currentNode(),
File “E:/3D Slicer/Slicer 5.6.1/slicer.org/Extensions-32438/TotalSegmentator/lib/Slicer-5.6/qt-scripted-modules/TotalSegmentator.py”, line 967, in process
self.logProcessOutput(proc)
File “E:/3D Slicer/Slicer 5.6.1/slicer.org/Extensions-32438/TotalSegmentator/lib/Slicer-5.6/qt-scripted-modules/TotalSegmentator.py”, line 787, in logProcessOutput
raise CalledProcessError(retcode, proc.args, output=proc.stdout, stderr=proc.stderr)
subprocess.CalledProcessError: Command ‘[‘E:/3D Slicer/Slicer 5.6.1/bin/…/bin\PythonSlicer.EXE’, ‘E:\3D Slicer\Slicer 5.6.1\lib\Python\Scripts\TotalSegmentator.exe’, ‘-i’, ‘C:/Users/xrnyy/AppData/Local/Temp/Slicer/\_\_SlicerTemp\_\_2024-02-20\_22+51+14.310/total-segmentator-input.nii’, ‘-o’, ‘C:/Users/xrnyy/AppData/Local/Temp/Slicer/\_\_SlicerTemp\_\_2024-02-20\_22+51+14.310/segmentation’, ‘–ml’, ‘–task’, ‘total’, ‘–fast’]’ returned non-zero exit status 120.
Then the error reported under the “Apply” button :
Processing started
Writing input file to C:/Users/xrnyy/AppData/Local/Temp/Slicer/\_\_SlicerTemp\_\_2024-02-20\_22+51+14.310/total-segmentator-input.nii
Creating segmentations with TotalSegmentator AI…
Total Segmentator arguments: [‘-i’, ‘C:/Users/xrnyy/AppData/Local/Temp/Slicer/\_\_SlicerTemp\_\_2024-02-20\_22+51+14.310/total-segmentator-input.nii’, ‘-o’, ‘C:/Users/xrnyy/AppData/Local/Temp/Slicer/\_\_SlicerTemp\_\_2024-02-20\_22+51+14.310/segmentation’, ‘–ml’, ‘–task’, ‘total’, ‘–fast’]
Traceback (most recent call last):
File “E:\3D Slicer\Slicer 5.6.1\lib\Python\Lib\runpy.py”, line 197, in \_run\_module\_as\_main
return \_run\_code(code, main\_globals, None,
File “E:\3D Slicer\Slicer 5.6.1\lib\Python\Lib\runpy.py”, line 87, in _run\_code
exec(code, run\_globals)
File "E:\3D Slicer\Slicer 5.6.1\lib\Python\Scripts\TotalSegmentator.exe\_main_.py", line 7, in
File “E:\3D Slicer\Slicer 5.6.1\lib\Python\Lib\site-packages\totalsegmentator\bin\TotalSegmentator.py”, line 127, in main
totalsegmentator(args.input, args.output, args.ml, args.nr\_thr\_resamp, args.nr\_thr\_saving,
File “E:\3D Slicer\Slicer 5.6.1\lib\Python\Lib\site-packages\totalsegmentator\python\_api.py”, line 77, in totalsegmentator
from totalsegmentator.nnunet import nnUNet\_predict\_image # this has to be after setting new env vars
File “E:\3D Slicer\Slicer 5.6.1\lib\Python\Lib\site-packages\totalsegmentator\nnunet.py”, line 23, in
from nnunetv2.inference.predict\_from\_raw\_data import predict\_from\_raw\_data
ModuleNotFoundError: No module named ‘nnunetv2’
Exception ignored in: \
AttributeError: ‘DummyFile’ object has no attribute ‘flush’
If you use this tool please cite: [https://pubs.rsna.org/doi/10.1148/ryai.230024](https://pubs.rsna.org/doi/10.1148/ryai.230024)
Thank you very much for the support!
---
### Author:  [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)
#### Post date: [February 20, 2024, 11:55pm UTC](https://discourse.slicer.org/t/totalsegmentator-error-at-first-run-returned-non-zero-exit-status-120/34439/2 "2024-02-20T23:55:21Z")
Please see the following post regarding a required workaround. Note this may change as the various dependencies of the `TotalSegmentator` python package change.
> [@Totalsegmentator failing with error 120](https://discourse.slicer.org/t/totalsegmentator-failing-with-error-120/34434/11):
>
> Aha! So, it is not a too old package, but a too recent package. Unfortunately, developer of dynamic\_network\_architectures broke backward compatibility with a recent update. ResidualEncoderUNet package must be imported as from dynamic\_network\_architectures.architectures.residual\_unet import ResidualEncoderUNet now, but since this change was snuck into a minor version update (0.2 to 0.4) developer of TotalSegmentator did not suspect anything bad would happen. As a workaround, you can downgrade d…