title: Heroku throwing an error when I try to push?
body: <p>I have an old project from 2 years ago that I would like to put onto another Heroku (so it is accessible if the first one stops working). Originally I build this project on Linux, and now I'm on Windows.</p>
  <p>I cloned the Github project, added the .env file (for API calls), and tried to push it to the new Heroku page. It didn't work at first so I installed Nodejs and Python buildpacks. I also renamed master to main.</p>
  <p>I've been getting errors &amp; trying to work through them, but I don't understand this last one:</p>
  <pre><code>ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget to activate a virtual environment?
  remote: Waiting for release... failed.
  </code></pre>
  <p>After Googling for answers, this is what I've tried sofar:</p>
  <pre><code>pip install virtualenv
  &gt; Requirement already satisfied:
  
  virtualenv --python C:\Python27\python.exe venv
  &gt; 'virtualenv' is not recognized as an internal or external command, operable program or batch file.
  
  python virtualenv --python C:\Python27\python.exe venv
  &gt; python: can't open file 'C:\Users\USER\Desktop\PROJECT from PROJECT\virtualenv': [Errno 2] No such file or directory
  </code></pre>
  <p>Any idea what I need to do? I need to create a PYTHONPATH environment variable? Or I need to activate the project in a virtual environment? Or something else?</p>