pip install dotenv error code 1 Windows 10

You should install python-dotenv

pip3 install python-dotenv

or

pip install python-dotenv

i.e

C:\Users\USER>pip3 install python-dotenv
Collecting python-dotenv
  Downloading python_dotenv-0.8.2-py2.py3-none-any.whl
Installing collected packages: python-dotenv
Successfully installed python-dotenv-0.8.2

Refer this issue