Mmdetection installation problem

Question 1 ：Install MMDetection Report errors

pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/{
    cu_version}/{
    torch_version}/index.html

My environment
cu_version10.1 （ Input nvcc -V command , You can find CUDA Version number .）
torch_version1.10.2

mmcv-full is only compiled on PyTorch 1.x.0 because the compatibility
usually holds between 1.x.0 and 1.x.1. If your PyTorch version is
1.x.1, you can install mmcv-full compiled with PyTorch 1.x.0 and it usually works well.
https://github.com/open-mmlab/mmcv#installation

 pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.10.0/index.html

There is an error

Have a look PyTorch and CUDA Version combination , It is found that there is no corresponding version , Reduce torch edition , take 1.10.2 Reduced to 1.8.1
https://github.com/open-mmlab/mmcv/blob/master/README_zh-CN.md

The whole process ：

#1.Prepare environment
conda create -n openmmlab python=3.7 -y
conda activate openmmlab
conda install pytorch=1.8.1 cudatoolkit=10.1 torchvision -c pytorch
#2.Install mmcv-full.
 pip install mmcv-full -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.8.0/index.html
#3.Install MMDetection.
git clone https://github.com/open-mmlab/mmdetection.git
cd mmdetection
pip install -r requirements/build.txt
pip install -v -e .  # or "python setup.py develop"

Question two fatal: unable to access…

stay git Problems encountered while downloading items ：

fatal: unable to access 'https://github.com/open-mmlab/mmdetection.git/': gnutls_handshake() failed: A TLS packet with unexpected length was received.

Solution ：
take https Change it to git Re execution

git clone git://github.com/open-mmlab/mmdetection.git

Question 3 :ImportError: cannot import name ‘PILLOW_VERSION’ from ‘PIL’

Method 2. According to the prompt in the last line of the error report , open function.py file , Use from PIL import Image, ImageOps, ImageEnhance, version In the replacement file from PIL import Image, ImageOps, ImageEnhance,PILLOW_VERSION This sentence .

Reference solutions ：https://blog.csdn.net/Lee_lg/article/details/103901632

When cuda 11
https://pytorch.org/get-started/previous-versions/

conda install pytorch==1.7.0 torchvision==0.8.0 torchaudio==0.7.0 cudatoolkit=11.0 -c pytorch

Mirror image problem https://blog.csdn.net/weixin_49304494/article/details/122622134