In case if you get error of broken virtual environment like
`The virtual environment found in /home/kamaldeep/.cache/pypoetry/virtualenvs/rasa-LHgLSZoI-py3.7 seems to be broken`
Then install venv in the respective python package like python3.6, python3.5. In my case, I am using python 3.7
`sudo apt-get install python3.7-venv`
Other way is to disable virtual environment
`poetry config virtualenvs.create false`