Failed to load image Python extension: Could not find module

vision
#21

Hi,

I am getting something similar:

UserWarning: Failed to load image Python extension: dlopen(/Users/anderson/Library/Caches/pypoetry/virtualenvs/redacted-cMHZGf73-py3.9/lib/python3.9/site-packages/torchvision/image.so, 0x0006): Library not loaded: @rpath/libpng16.16.dylib
  Referenced from: /Users/anderson/Library/Caches/pypoetry/virtualenvs/redacted-cMHZGf73-py3.9/lib/python3.9/site-packages/torchvision/image.so
  Reason: tried: '/Users/malfet/miniforge3/envs/py_39_torch-1.10.2/lib/libpng16.16.dylib' (no such file), '/Users/malfet/miniforge3/envs/py_39_torch-1.10.2/lib/libpng16.16.dylib' (no such file), '/Users/malfet/miniforge3/envs/py_39_torch-1.10.2/lib/libpng16.16.dylib' (no such file), '/Users/malfet/miniforge3/envs/py_39_torch-1.10.2/lib/libpng16.16.dylib' (no such file), '/usr/local/lib/libpng16.16.dylib' (no such file), '/usr/lib/libpng16.16.dylib' (no such file)
  warn(f"Failed to load image Python extension: {e}")

Seems like the file is not being included in torchvision-0.11.3-cp39-cp39-macosx_11_0_arm64.whl and we are not pointing to the right location anyway. I don’t have miniforge installed or a malfet user.

#22

Hi Andersen!
I have 100% similar warning on MBP 14 m1 pro.
User/malfet/miniforge3/…
Do you know how to fix this warn? Internet doesn’t know same problems and I don’t know how to fix it.

#23

Same here with Macbook 16" M1Pro and python 3.8.9

#24

Getting the issue on Linux with torchvision nightly CPU (no CUDA) installed via:

conda install -c pytorch-nightly torchvision cpuonly

Message:
UserWarning: Failed to load image Python extension: /home/azureuser/miniconda3/envs/pytorch-0/lib/python3.9/site-packages/torchvision/image.so: undefined symbol: _ZN5torch3jit17parseSchemaOrNameERKSs

Demangling the symbol name, it becomes torch::jit::parseSchemaOrName(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)

Should I file a GitHub issue?

#25

Hi Andrade, have you fixed it? I have the same problem.
There is a closed issue at https://github.com/pytorch/vision/issues/5137 where malfet said it has been resolved by 0.11.3, but I doubt that.
I create an issue at https://github.com/pytorch/vision/issues/5413.

#26

I solved it by installing libpng and libjpeg with Homebrew and manually adding symlinks to /usr/local/lib.

I still think we should address this with a ticket since PyTorch packages are supposed to come with all dependencies included.

#27

Hey,
The same situation I encountered, I 'd like to wonder whether you have solved this error, plz.

#28

Hey,
Hope everything is fine on your side :slight_smile:
I just upgraded my CUDA from 10.2 to 11.1 and everything worked.

#29

I encountered the same problem and fixed it by going to the directory that is shown in the error. It opens up a .txt file and you just need to change the extension name of “image.py”. In my case, I had to change it to “image.jpg” since i am using jpg files for my code. Try it! hope it will help.

#30

I’m getting this in a ubuntu docker image with 1.11, “pip3 install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu113”

#31

I am having the same issue. I am installing from source in an ubuntu docker image with cuda 11.6. Torchvision v0.12.0

#32

My issue was solved with conda install libpng jpeg

1 Like
#33

On Apple M1Pro with latest pytorch nightly, this solved my issue

#34

Same import warning here after building latest version from source on Ubuntu 20.04 (WSL2) Virtualenv with Intel CPU and Nvidia Turing.