I reinstalled the sklearn and scipy, after that sklearn can be imported correctly.
Package Version
absl-py 0.10.0
aiohttp 3.7.4.post0
anyio 2.2.0
appnope 0.1.2
argon2-cffi 20.1.0
astroid 2.6.6
astunparse 1.6.3
async-generator 1.10
async-timeout 3.0.1
attrs 21.2.0
autopep8 1.5.6
Babel 2.9.1
backcall 0.2.0
beniget 0.3.0
biopython 1.79
bleach 4.0.0
blinker 1.4
Bottleneck 1.3.2
brotlipy 0.7.0
cached-property 1.5.2
cachetools 4.2.2
certifi 2021.5.30
cffi 1.14.5
chardet 4.0.0
charset-normalizer 2.0.4
clang 5.0
click 8.0.3
cloudpickle 2.0.0
conda 4.10.3
conda-package-handling 1.7.3
cryptography 3.4.7
cycler 0.11.0
Cython 0.29.24
decorator 5.1.0
defusedxml 0.7.1
deprecation 2.1.0
dill 0.3.4
entrypoints 0.3
et-xmlfile 1.1.0
flake8 3.9.0
flatbuffers 1.12
future 0.18.2
gast 0.4.0
google-auth 1.33.0
google-auth-oauthlib 0.4.1
google-pasta 0.2.0
googleapis-common-protos 1.53.0
grpcio 1.38.1
gym 0.21.0
h5py 3.1.0
idna 3.2
importlib-metadata 4.8.1
ipykernel 5.3.4
ipython 7.26.0
ipython-genutils 0.2.0
isort 5.9.3
jdcal 1.4.1
jedi 0.17.2
Jinja2 3.0.2
joblib 1.1.0
json5 0.9.6
jsonschema 3.2.0
jupyter-client 7.0.1
jupyter-core 4.7.1
jupyter-http-over-ws 0.0.8
jupyter-lsp 1.5.0
jupyter-packaging 0.10.4
jupyter-server 1.6.4
jupyterlab 3.1.7
jupyterlab-lsp 3.9.1
jupyterlab-pygments 0.1.2
jupyterlab-server 2.8.2
keras 2.6.0
Keras-Preprocessing 1.1.2
kiwisolver 1.3.2
lazy-object-proxy 1.6.0
Markdown 3.3.4
MarkupSafe 2.0.1
matplotlib 3.4.2
matplotlib-inline 0.1.2
mccabe 0.6.1
mistune 0.8.4
msgpack 1.0.2
msgpack-numpy 0.4.7.1
multidict 5.1.0
nbclassic 0.2.6
nbclient 0.5.3
nbconvert 6.1.0
nbformat 5.1.3
nest-asyncio 1.5.1
networkx 2.6.3
notebook 6.4.5
numexpr 2.7.3
numpy 1.19.5
oauthlib 3.1.1
olefile 0.46
openpyxl 3.0.5
opt-einsum 3.3.0
packaging 21.0
pandas 1.3.1
pandocfilters 1.4.3
parso 0.7.0
pexpect 4.8.0
pickleshare 0.7.5
Pillow 8.4.0
pip 21.3
pluggy 0.13.1
ply 3.11
prometheus-client 0.11.0
promise 2.3
prompt-toolkit 3.0.20
protobuf 3.17.2
ptyprocess 0.7.0
pyasn1 0.4.8
pyasn1-modules 0.2.8
pybind11 2.8.1
pycodestyle 2.6.0
pycosat 0.6.3
pycparser 2.20
pydocstyle 6.1.1
pyflakes 2.2.0
pyglet 1.5.21
Pygments 2.10.0
PyJWT 2.1.0
pylint 2.9.6
pyOpenSSL 21.0.0
pyparsing 3.0.4
pyrsistent 0.18.0
PySocks 1.7.1
python-dateutil 2.8.2
python-jsonrpc-server 0.4.0
python-language-server 0.36.2
pythran 0.9.11
pytz 2021.3
pyzmq 20.0.0
requests 2.26.0
requests-oauthlib 1.3.0
rope 0.19.0
rsa 4.7.2
ruamel-yaml-conda 0.15.100
scikit-learn 1.0.1
scipy 1.7.1
seaborn 0.11.2
Send2Trash 1.8.0
setuptools 52.0.0.post20210825
six 1.15.0
sniffio 1.2.0
snowballstemmer 2.1.0
tensorboard 2.6.0
tensorboard-data-server 0.6.0
tensorboard-plugin-wit 1.6.0
tensorflow-datasets 4.4.0
tensorflow-estimator 2.7.0
tensorflow-macos 2.6.0
tensorflow-metadata 1.4.0
tensorflow-metal 0.2.0
Tensorforce 0.6.5
termcolor 1.1.0
terminado 0.9.4
testpath 0.5.0
threadpoolctl 3.0.0
toml 0.10.2
tomlkit 0.7.0
tornado 6.1
tqdm 4.62.3
traitlets 5.1.0
typing-extensions 3.7.4.3
ujson 4.0.2
urllib3 1.26.7
wcwidth 0.2.5
webencodings 0.5.1
Werkzeug 2.0.2
wheel 0.35.1
wrapt 1.12.1
yapf 0.31.0
yarl 1.6.3
zipp 3.6.0