AttributeError: Can't get attribute 'C3k2' on <module 'ultralytics.nn.modules.block' from '/usr/local/lib/python3.9/dist-packages/ultralytics/nn/modules/block.py'>

[Keven-Don]

guys I had met some problem which error message like that

Traceback (most recent call last):
File "/home/ross/yo11/src/predict.py", line 9, in
model = YOLO("/home/ross/yo11/model/yolo11x-pose.pt")
File "/usr/local/lib/python3.9/dist-packages/ultralytics/models/yolo/model.py", line 23, in init
super().init(model=model, task=task, verbose=verbose)
File "/usr/local/lib/python3.9/dist-packages/ultralytics/engine/model.py", line 152, in init
self._load(model, task=task)
File "/usr/local/lib/python3.9/dist-packages/ultralytics/engine/model.py", line 241, in _load
self.model, self.ckpt = attempt_load_one_weight(weights)
File "/usr/local/lib/python3.9/dist-packages/ultralytics/nn/tasks.py", line 806, in attempt_load_one_weight
ckpt, weight = torch_safe_load(weight) # load ckpt
File "/usr/local/lib/python3.9/dist-packages/ultralytics/nn/tasks.py", line 732, in torch_safe_load
ckpt = torch.load(file, map_location="cpu")
File "/usr/local/lib/python3.9/dist-packages/torch/serialization.py", line 789, in load
return _load(opened_zipfile, map_location, pickle_module, **pickle_load_args)
File "/usr/local/lib/python3.9/dist-packages/torch/serialization.py", line 1131, in _load
result = unpickler.load()
File "/usr/local/lib/python3.9/dist-packages/torch/serialization.py", line 1124, in find_class
return super().find_class(mod_name, name)
AttributeError: Can't get attribute 'C3k2' on <module 'ultralytics.nn.modules.block' from '/usr/local/lib/python3.9/dist-packages/ultralytics/nn/modules/block.py'>
and my environment version is : #

Name Version Build Channel

_libgcc_mutex 0.1 main defaults
_openmp_mutex 5.1 1_gnu defaults
bzip2 1.0.8 h5eee18b_6 defaults
ca-certificates 2024.9.24 h06a4308_0 defaults
certifi 2024.8.30 pypi_0 pypi
charset-normalizer 3.4.0 pypi_0 pypi
contourpy 1.3.1 pypi_0 pypi
cycler 0.12.1 pypi_0 pypi
filelock 3.16.1 pypi_0 pypi
fonttools 4.55.0 pypi_0 pypi
fsspec 2024.10.0 pypi_0 pypi
idna 3.10 pypi_0 pypi
jinja2 3.1.4 pypi_0 pypi
kiwisolver 1.4.7 pypi_0 pypi
ld_impl_linux-64 2.40 h12ee557_0 defaults
libffi 3.4.4 h6a678d5_1 defaults
libgcc-ng 11.2.0 h1234567_1 defaults
libgomp 11.2.0 h1234567_1 defaults
libstdcxx-ng 11.2.0 h1234567_1 defaults
libuuid 1.41.5 h5eee18b_0 defaults
markupsafe 3.0.2 pypi_0 pypi
matplotlib 3.9.2 pypi_0 pypi
mpmath 1.3.0 pypi_0 pypi
ncurses 6.4 h6a678d5_0 defaults
networkx 3.4.2 pypi_0 pypi
numpy 2.1.3 pypi_0 pypi
nvidia-cublas-cu12 12.4.5.8 pypi_0 pypi
nvidia-cuda-cupti-cu12 12.4.127 pypi_0 pypi
nvidia-cuda-nvrtc-cu12 12.4.127 pypi_0 pypi
nvidia-cuda-runtime-cu12 12.4.127 pypi_0 pypi
nvidia-cudnn-cu12 9.1.0.70 pypi_0 pypi
nvidia-cufft-cu12 11.2.1.3 pypi_0 pypi
nvidia-curand-cu12 10.3.5.147 pypi_0 pypi
nvidia-cusolver-cu12 11.6.1.9 pypi_0 pypi
nvidia-cusparse-cu12 12.3.1.170 pypi_0 pypi
nvidia-nccl-cu12 2.21.5 pypi_0 pypi
nvidia-nvjitlink-cu12 12.4.127 pypi_0 pypi
nvidia-nvtx-cu12 12.4.127 pypi_0 pypi
opencv-python 4.10.0.84 pypi_0 pypi
openssl 3.0.15 h5eee18b_0 defaults
packaging 24.2 pypi_0 pypi
pandas 2.2.3 pypi_0 pypi
pillow 11.0.0 pypi_0 pypi
pip 24.2 py310h06a4308_0 defaults
psutil 6.1.0 pypi_0 pypi
py-cpuinfo 9.0.0 pypi_0 pypi
pyparsing 3.2.0 pypi_0 pypi
python 3.10.15 he870216_1 defaults
python-dateutil 2.9.0.post0 pypi_0 pypi
pytz 2024.2 pypi_0 pypi
pyyaml 6.0.2 pypi_0 pypi
readline 8.2 h5eee18b_0 defaults
requests 2.32.3 pypi_0 pypi
scipy 1.14.1 pypi_0 pypi
seaborn 0.13.2 pypi_0 pypi
setuptools 75.1.0 py310h06a4308_0 defaults
six 1.16.0 pypi_0 pypi
sqlite 3.45.3 h5eee18b_0 defaults
sympy 1.13.1 pypi_0 pypi
tk 8.6.14 h39e8969_0 defaults
torch 2.5.1 pypi_0 pypi
torchvision 0.20.1 pypi_0 pypi
tqdm 4.67.0 pypi_0 pypi
triton 3.1.0 pypi_0 pypi
typing-extensions 4.12.2 pypi_0 pypi
tzdata 2024.2 pypi_0 pypi
ultralytics 8.3.32 pypi_0 pypi
ultralytics-thop 2.0.11 pypi_0 pypi
urllib3 2.2.3 pypi_0 pypi
wheel 0.44.0 py310h06a4308_0 defaults
xz 5.4.6 h5eee18b_1 defaults
zlib 1.2.13 h5eee18b_1 defaults

[UltralyticsAssistant]

👋 Hello @Keven-Don, thank you for bringing this to our attention! 🚀 We're here to help.

It looks like you encountered an AttributeError related to the C3k2 attribute. To assist you better, please provide a minimum reproducible example. This will help us understand the context of the issue you're facing more clearly.

In the meantime, ensure you have installed the latest version of Ultralytics with:

pip install -U ultralytics

This ensures that any recent fixes are applied and may resolve your issue. Also, please check that your environment meets all necessary requirements as detailed in our repository's requirements.

If you haven't already, explore our Docs for detailed usage examples and insights. For further community support, join us on Discord 🎧 or engage in discussions on Discourse and Subreddit.

🏗️ Our Ultralytics engineers will review your query soon to provide additional assistance. Appreciate your patience and support. Stay tuned!

[glenn-jocher]

@Keven-Don the error you're encountering with the C3k2 attribute suggests a potential compatibility issue with your model weights or the Ultralytics package version. Please ensure you are using the latest version of the Ultralytics package by running pip install ultralytics --upgrade. Additionally, verify that your model weights are compatible with this version. If the issue persists, try re-downloading your model weights and check the Ultralytics YOLO documentation for any updates or changes in model architecture.