# Can't load onnx model converted from pythorch model with opencv

**URL:** https://forum.opencv.org/t/cant-load-onnx-model-converted-from-pythorch-model-with-opencv/3176
**Category:** Python
**Tags:** dnn
**Created:** [May 6, 2021, 5:26am UTC](https://forum.opencv.org/t/cant-load-onnx-model-converted-from-pythorch-model-with-opencv/3176 "2021-05-06T05:26:27Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![neouyghur](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/neouyghur/32/2028_2.png) [@neouyghur](https://forum.opencv.org/u/neouyghur)
#### Post date: [May 6, 2021, 5:26am UTC](https://forum.opencv.org/t/cant-load-onnx-model-converted-from-pythorch-model-with-opencv/3176/1 "2021-05-06T05:26:27Z")

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Hi, I got the following error when I tried to read it with opencv ( `ort_session = cv2.dnn.readNetFromONNX("test.onnx") ` ):

`File "open_cv_test.py", line 12, in <module> ort_session = cv2.dnn.readNetFromONNX("test.onnx") cv2.error: OpenCV(4.4.0) /tmp/pip-req-build-njn2fp78/opencv/modules/dnn/include/opencv2/dnn/shape_utils.hpp:222: error: (-215:Assertion failed) clamped.start < clamped.end in function 'clamp'`

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<div class="post-metadata">

### Author: ![neouyghur](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.opencv.org/neouyghur/32/2028_2.png) [@neouyghur](https://forum.opencv.org/u/neouyghur)
#### Post date: [May 6, 2021, 5:37am UTC](https://forum.opencv.org/t/cant-load-onnx-model-converted-from-pythorch-model-with-opencv/3176/2 "2021-05-06T05:37:21Z")

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I fixed the problem bu upgrading my python-opencv module to the latest version.