brew install pyenv' 
vim  .bash_profile  
Add the following code into the file:
export PATH="$HOME/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"
Then run: 
source  .bash_profile
pyenv install 3.8.5 
pyenv virtualenv 3.8.5 dataLabeling 
pyenv activate dataLabeling
https://github.com/basketduck/dataLabeling/ 
Change the working path to the cloned local repository, where includes requirements.txt. 
Run the following code: 
pip uninstall -ry requirements.txt 
pip install -r requirements.txt 
python manage.py runserver
http://127.0.0.1:8000/engine/dotVis