No module named 'mmcv.runner'

[2783000]

conda create -n open-mmlab python=3.7 -y
conda activate open-mmlab

conda install pytorch=1.6.0 torchvision cudatoolkit=10.1 -c pytorch
pip install mmcv-full==1.2.2 -f https://download.openmmlab.com/mmcv/dist/cu101/torch1.6.0/index.html
git clone https://github.com/fudan-zvg/SETR.git
cd SETR
pip install -e . # or "python setup.py develop"
pip install -r requirements/optional.txt

出现错误
Traceback (most recent call last):
File "/home/lxj/code/EDTER-main/tools/train.py", line 9, in
from mmcv.runner import init_dist
ModuleNotFoundError: No module named 'mmcv.runner'