error while training

[Vinaygoudasp7]

Prerequisite

• I have searched the existing and past issues but cannot get the expected help.
• I have read the FAQ documentation but cannot get the expected help.
• The bug has not been fixed in the latest version.

🐞 Describe the bug

while i train model i get error

Environment

(mmopenlab) gpu-server@gpu-server:~/mmyolo_model_training/mmyolo$ python tools/train.py configs/yolov8/yolov8_n_syncbn_fast_8*b16-500e_customdataser.py
Traceback (most recent call last):
File "/home/gpu-server/mmyolo_model_training/mmyolo/tools/train.py", line 13, in
from mmyolo.utils import is_metainfo_lower
File "/home/gpu-server/mmyolo_model_training/mmyolo/mmyolo/utils/init.py", line 3, in
from .misc import is_metainfo_lower, switch_to_deploy
File "/home/gpu-server/mmyolo_model_training/mmyolo/mmyolo/utils/misc.py", line 10, in
from mmyolo.models import RepVGGBlock
File "/home/gpu-server/mmyolo_model_training/mmyolo/mmyolo/models/init.py", line 2, in
from .backbones import * # noqa: F401,F403
File "/home/gpu-server/mmyolo_model_training/mmyolo/mmyolo/models/backbones/init.py", line 3, in
from .csp_darknet import YOLOv5CSPDarknet, YOLOv8CSPDarknet, YOLOXCSPDarknet
File "/home/gpu-server/mmyolo_model_training/mmyolo/mmyolo/models/backbones/csp_darknet.py", line 7, in
from mmdet.models.backbones.csp_darknet import CSPLayer, Focus
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmdet/models/init.py", line 2, in
from .backbones import * # noqa: F401,F403
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmdet/models/backbones/init.py", line 2, in
from .csp_darknet import CSPDarknet
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmdet/models/backbones/csp_darknet.py", line 11, in
from ..layers import CSPLayer
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmdet/models/layers/init.py", line 3, in
from .bbox_nms import fast_nms, multiclass_nms
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmdet/models/layers/bbox_nms.py", line 5, in
from mmcv.ops.nms import batched_nms
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmcv/ops/init.py", line 2, in
from .active_rotated_filter import active_rotated_filter
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmcv/ops/active_rotated_filter.py", line 10, in
ext_module = ext_loader.load_ext(
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/site-packages/mmcv/utils/ext_loader.py", line 13, in load_ext
ext = importlib.import_module('mmcv.' + name)
File "/home/gpu-server/anaconda3/envs/mmopenlab/lib/python3.10/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
ModuleNotFoundError: No module named 'mmcv._ext'

below is my env list
(mmopenlab) gpu-server@gpu-server:~/mmyolo_model_training/mmyolo$ conda list

packages in environment at /home/gpu-server/anaconda3/envs/mmopenlab:

Name Version Build Channel

_libgcc_mutex 0.1 main
_openmp_mutex 5.1 1_gnu
addict 2.4.0 pypi_0 pypi
albucore 0.0.24 pypi_0 pypi
albumentations 2.0.8 pypi_0 pypi
aliyun-python-sdk-core 2.16.0 pypi_0 pypi
aliyun-python-sdk-kms 2.16.5 pypi_0 pypi
annotated-types 0.7.0 pypi_0 pypi
anyio 4.9.0 pypi_0 pypi
argon2-cffi 23.1.0 pypi_0 pypi
argon2-cffi-bindings 21.2.0 pypi_0 pypi
arrow 1.3.0 pypi_0 pypi
asttokens 3.0.0 pypi_0 pypi
async-lru 2.0.5 pypi_0 pypi
attrs 25.3.0 pypi_0 pypi
babel 2.17.0 pypi_0 pypi
beautifulsoup4 4.13.4 pypi_0 pypi
binutils_impl_linux-64 2.40 h5293946_0
binutils_linux-64 2.40 hb3c18ed_9 conda-forge
blas 1.0 mkl
bleach 6.2.0 pypi_0 pypi
brotli-python 1.0.9 py310h6a678d5_9
bzip2 1.0.8 h5eee18b_6
ca-certificates 2025.4.26 hbd8a1cb_0 conda-forge
certifi 2025.4.26 pyhd8ed1ab_0 conda-forge
cffi 1.17.1 pypi_0 pypi
charset-normalizer 3.3.2 pyhd3eb1b0_0
click 8.2.1 pypi_0 pypi
colorama 0.4.6 pypi_0 pypi
comm 0.2.2 pypi_0 pypi
contourpy 1.3.2 pypi_0 pypi
crcmod 1.7 pypi_0 pypi
cryptography 45.0.3 pypi_0 pypi
cuda-cccl 11.8.89 0 nvidia/label/cuda-11.8.0
cuda-command-line-tools 11.8.0 0 nvidia/label/cuda-11.8.0
cuda-compiler 11.8.0 0 nvidia/label/cuda-11.8.0
cuda-cudart 11.8.89 0 nvidia/label/cuda-11.8.0
cuda-cudart-dev 11.8.89 0 nvidia/label/cuda-11.8.0
cuda-cuobjdump 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-cupti 11.8.87 0 nvidia/label/cuda-11.8.0
cuda-cuxxfilt 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-documentation 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-driver-dev 11.8.89 0 nvidia/label/cuda-11.8.0
cuda-gdb 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-libraries 11.8.0 0 nvidia/label/cuda-11.8.0
cuda-libraries-dev 11.8.0 0 nvidia/label/cuda-11.8.0
cuda-memcheck 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-nsight 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-nsight-compute 11.8.0 0 nvidia/label/cuda-11.8.0
cuda-nvcc 11.8.89 0 nvidia/label/cuda-11.8.0
cuda-nvdisasm 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-nvml-dev 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-nvprof 11.8.87 0 nvidia/label/cuda-11.8.0
cuda-nvprune 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-nvrtc 11.8.89 0 nvidia/label/cuda-11.8.0
cuda-nvrtc-dev 11.8.89 0 nvidia/label/cuda-11.8.0
cuda-nvtx 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-nvvp 11.8.87 0 nvidia/label/cuda-11.8.0
cuda-profiler-api 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-sanitizer-api 11.8.86 0 nvidia/label/cuda-11.8.0
cuda-toolkit 11.8.0 0 nvidia/label/cuda-11.8.0
cuda-tools 11.8.0 0 nvidia/label/cuda-11.8.0
cuda-visual-tools 11.8.0 0 nvidia/label/cuda-11.8.0
cycler 0.12.1 pypi_0 pypi
debugpy 1.8.14 pypi_0 pypi
decorator 5.2.1 pypi_0 pypi
defusedxml 0.7.1 pypi_0 pypi
exceptiongroup 1.3.0 pypi_0 pypi
executing 2.2.0 pypi_0 pypi
fastjsonschema 2.21.1 pypi_0 pypi
ffmpeg 4.3 hf484d3e_0 pytorch
filelock 3.14.0 pypi_0 pypi
fonttools 4.58.1 pypi_0 pypi
fqdn 1.5.1 pypi_0 pypi
freetype 2.13.3 h4a9f257_0
fsspec 2025.5.1 pypi_0 pypi
gcc_impl_linux-64 15.1.0 h4393ad2_2 conda-forge
gcc_linux-64 15.1.0 h6005d9a_10 conda-forge
gds-tools 1.4.0.31 0 nvidia/label/cuda-11.8.0
giflib 5.2.2 h5eee18b_0
gmp 6.3.0 h6a678d5_0
gmpy2 2.2.1 py310h5eee18b_0
gnutls 3.6.15 he1e5248_0
gxx_impl_linux-64 15.1.0 h6a1bac1_2 conda-forge
gxx_linux-64 15.1.0 h92237c4_10 conda-forge
h11 0.16.0 pypi_0 pypi
httpcore 1.0.9 pypi_0 pypi
httpx 0.28.1 pypi_0 pypi
idna 3.7 py310h06a4308_0
intel-openmp 2023.1.0 hdb19cb5_46306
ipykernel 6.29.5 pypi_0 pypi
ipython 8.36.0 pypi_0 pypi
isoduration 20.11.0 pypi_0 pypi
jedi 0.19.2 pypi_0 pypi
jinja2 3.1.6 py310h06a4308_0
jmespath 0.10.0 pypi_0 pypi
jpeg 9e h5eee18b_3
json5 0.12.0 pypi_0 pypi
jsonpointer 3.0.0 pypi_0 pypi
jsonschema 4.24.0 pypi_0 pypi
jsonschema-specifications 2025.4.1 pypi_0 pypi
jupyter-client 8.6.3 pypi_0 pypi
jupyter-core 5.8.1 pypi_0 pypi
jupyter-events 0.12.0 pypi_0 pypi
jupyter-lsp 2.2.5 pypi_0 pypi
jupyter-server 2.16.0 pypi_0 pypi
jupyter-server-terminals 0.5.3 pypi_0 pypi
jupyterlab 4.4.3 pypi_0 pypi
jupyterlab-pygments 0.3.0 pypi_0 pypi
jupyterlab-server 2.27.3 pypi_0 pypi
kernel-headers_linux-64 3.10.0 he073ed8_18 conda-forge
kiwisolver 1.4.8 pypi_0 pypi
lame 3.100 h7b6447c_0
lcms2 2.16 h92b89f2_1
ld_impl_linux-64 2.40 h12ee557_0
lerc 4.0.0 h6a678d5_0
libcublas 11.11.3.6 0 nvidia/label/cuda-11.8.0
libcublas-dev 11.11.3.6 0 nvidia/label/cuda-11.8.0
libcufft 10.9.0.58 0 nvidia/label/cuda-11.8.0
libcufft-dev 10.9.0.58 0 nvidia/label/cuda-11.8.0
libcufile 1.4.0.31 0 nvidia/label/cuda-11.8.0
libcufile-dev 1.4.0.31 0 nvidia/label/cuda-11.8.0
libcurand 10.3.0.86 0 nvidia/label/cuda-11.8.0
libcurand-dev 10.3.0.86 0 nvidia/label/cuda-11.8.0
libcusolver 11.4.1.48 0 nvidia/label/cuda-11.8.0
libcusolver-dev 11.4.1.48 0 nvidia/label/cuda-11.8.0
libcusparse 11.7.5.86 0 nvidia/label/cuda-11.8.0
libcusparse-dev 11.7.5.86 0 nvidia/label/cuda-11.8.0
libdeflate 1.22 h5eee18b_0
libffi 3.4.4 h6a678d5_1
libgcc 15.1.0 h767d61c_2 conda-forge
libgcc-devel_linux-64 15.1.0 h4c094af_102 conda-forge
libgcc-ng 15.1.0 h69a702a_2 conda-forge
libgomp 15.1.0 h767d61c_2 conda-forge
libiconv 1.16 h5eee18b_3
libidn2 2.3.4 h5eee18b_0
libjpeg-turbo 2.0.0 h9bf148f_0 pytorch
libnpp 11.8.0.86 0 nvidia/label/cuda-11.8.0
libnpp-dev 11.8.0.86 0 nvidia/label/cuda-11.8.0
libnvjpeg 11.9.0.86 0 nvidia/label/cuda-11.8.0
libnvjpeg-dev 11.9.0.86 0 nvidia/label/cuda-11.8.0
libpng 1.6.39 h5eee18b_0
libsanitizer 15.1.0 h97b714f_2 conda-forge
libstdcxx 15.1.0 h8f9b012_2 conda-forge
libstdcxx-devel_linux-64 15.1.0 h4c094af_102 conda-forge
libstdcxx-ng 11.2.0 h1234567_1
libtasn1 4.19.0 h5eee18b_0
libtiff 4.7.0 hde9077f_0
libunistring 0.9.10 h27cfd23_0
libuuid 1.41.5 h5eee18b_0
libwebp 1.3.2 h9f374a3_1
libwebp-base 1.3.2 h5eee18b_1
llvm-openmp 14.0.6 h9e868ea_0
lz4-c 1.9.4 h6a678d5_1
markdown 3.8 pypi_0 pypi
markdown-it-py 3.0.0 pypi_0 pypi
markupsafe 3.0.2 py310h5eee18b_0
matplotlib 3.10.3 pypi_0 pypi
matplotlib-inline 0.1.7 pypi_0 pypi
mdurl 0.1.2 pypi_0 pypi
mistune 3.1.3 pypi_0 pypi
mkl 2023.1.0 h213fc3f_46344
mkl-service 2.4.0 py310h5eee18b_2
mkl_fft 1.3.11 py310h5eee18b_0
mkl_random 1.2.8 py310h1128e8f_0
mmcv 2.0.1 pypi_0 pypi
mmdet 3.0.0 pypi_0 pypi
mmengine 0.7.1 pypi_0 pypi
mmyolo 0.6.0 dev_0
model-index 0.1.11 pypi_0 pypi
mpc 1.3.1 h5eee18b_0
mpfr 4.2.1 h5eee18b_0
mpmath 1.3.0 py310h06a4308_0
nbclient 0.10.2 pypi_0 pypi
nbconvert 7.16.6 pypi_0 pypi
nbformat 5.10.4 pypi_0 pypi
ncurses 6.4 h6a678d5_0
nest-asyncio 1.6.0 pypi_0 pypi
nettle 3.7.3 hbbd107a_1
networkx 3.4.2 py310h06a4308_0
ninja 1.11.1.4 pypi_0 pypi
notebook-shim 0.2.4 pypi_0 pypi
nsight-compute 2022.3.0.22 0 nvidia/label/cuda-11.8.0
numpy 1.26.4 pypi_0 pypi
nvidia-cublas-cu11 11.11.3.6 pypi_0 pypi
nvidia-cuda-cupti-cu11 11.8.87 pypi_0 pypi
nvidia-cuda-nvrtc-cu11 11.8.89 pypi_0 pypi
nvidia-cuda-runtime-cu11 11.8.89 pypi_0 pypi
nvidia-cudnn-cu11 8.7.0.84 pypi_0 pypi
nvidia-cufft-cu11 10.9.0.58 pypi_0 pypi
nvidia-curand-cu11 10.3.0.86 pypi_0 pypi
nvidia-cusolver-cu11 11.4.1.48 pypi_0 pypi
nvidia-cusparse-cu11 11.7.5.86 pypi_0 pypi
nvidia-nccl-cu11 2.19.3 pypi_0 pypi
nvidia-nvtx-cu11 11.8.86 pypi_0 pypi
opencv-python 4.11.0.86 pypi_0 pypi
opendatalab 0.0.10 pypi_0 pypi
openh264 2.1.1 h4ff587b_0
openjpeg 2.5.2 h0d4d230_1
openmim 0.3.9 pypi_0 pypi
openssl 3.5.0 h7b32b05_1 conda-forge
openxlab 0.1.2 pypi_0 pypi
ordered-set 4.1.0 pypi_0 pypi
oss2 2.17.0 pypi_0 pypi
overrides 7.7.0 pypi_0 pypi
packaging 24.2 pypi_0 pypi
pandas 2.2.3 pypi_0 pypi
pandocfilters 1.5.1 pypi_0 pypi
parso 0.8.4 pypi_0 pypi
pexpect 4.9.0 pypi_0 pypi
pillow 11.1.0 py310hac6e08b_1
pip 23.0.1 pypi_0 pypi
platformdirs 4.3.8 pypi_0 pypi
prettytable 3.16.0 pypi_0 pypi
prometheus-client 0.22.0 pypi_0 pypi
prompt-toolkit 3.0.51 pypi_0 pypi
psutil 7.0.0 pypi_0 pypi
ptyprocess 0.7.0 pypi_0 pypi
pure-eval 0.2.3 pypi_0 pypi
pycocotools 2.0.9 pypi_0 pypi
pycparser 2.22 pypi_0 pypi
pycryptodome 3.23.0 pypi_0 pypi
pydantic 2.11.5 pypi_0 pypi
pydantic-core 2.33.2 pypi_0 pypi
pygments 2.19.1 pypi_0 pypi
pyparsing 3.2.3 pypi_0 pypi
pysocks 1.7.1 py310h06a4308_0
pytest-runner 6.0.1 pypi_0 pypi
python 3.10.16 he870216_1
python-dateutil 2.9.0.post0 pypi_0 pypi
python-json-logger 3.3.0 pypi_0 pypi
pytorch-mutex 1.0 cuda pytorch
pytz 2023.4 pypi_0 pypi
pyyaml 6.0.2 py310h5eee18b_0
pyzmq 26.4.0 pypi_0 pypi
readline 8.2 h5eee18b_0
referencing 0.36.2 pypi_0 pypi
requests 2.28.2 pypi_0 pypi
rfc3339-validator 0.1.4 pypi_0 pypi
rfc3986-validator 0.1.1 pypi_0 pypi
rich 13.4.2 pypi_0 pypi
rpds-py 0.25.1 pypi_0 pypi
scipy 1.15.3 pypi_0 pypi
send2trash 1.8.3 pypi_0 pypi
setuptools 60.2.0 pypi_0 pypi
shapely 2.1.1 pypi_0 pypi
simsimd 6.2.1 pypi_0 pypi
six 1.17.0 pypi_0 pypi
sniffio 1.3.1 pypi_0 pypi
soupsieve 2.7 pypi_0 pypi
sqlite 3.45.3 h5eee18b_0
stack-data 0.6.3 pypi_0 pypi
stringzilla 3.12.5 pypi_0 pypi
sympy 1.13.1 pypi_0 pypi
sysroot_linux-64 2.17 h0157908_18 conda-forge
tabulate 0.9.0 pypi_0 pypi
tbb 2021.8.0 hdb19cb5_0
termcolor 3.1.0 pypi_0 pypi
terminado 0.18.1 pypi_0 pypi
terminaltables 3.1.10 pypi_0 pypi
tinycss2 1.4.0 pypi_0 pypi
tk 8.6.14 h39e8969_0
tomli 2.2.1 pypi_0 pypi
torch 2.2.2+cu118 pypi_0 pypi
torchaudio 2.2.2+cu118 pypi_0 pypi
torchvision 0.17.2+cu118 pypi_0 pypi
tornado 6.5.1 pypi_0 pypi
tqdm 4.65.2 pypi_0 pypi
traitlets 5.14.3 pypi_0 pypi
triton 2.2.0 pypi_0 pypi
types-python-dateutil 2.9.0.20250516 pypi_0 pypi
typing-inspection 0.4.1 pypi_0 pypi
typing_extensions 4.12.2 py310h06a4308_0
tzdata 2025.2 pypi_0 pypi
uri-template 1.3.0 pypi_0 pypi
urllib3 1.26.20 pypi_0 pypi
wcwidth 0.2.13 pypi_0 pypi
webcolors 24.11.1 pypi_0 pypi
webencodings 0.5.1 pypi_0 pypi
websocket-client 1.8.0 pypi_0 pypi
wheel 0.45.1 py310h06a4308_0
xz 5.6.4 h5eee18b_1
yaml 0.2.5 h7b6447c_0
yapf 0.43.0 pypi_0 pypi
zlib 1.2.13 h5eee18b_1
zstd 1.5.6 hc292b87_0

Additional information

No response