Starting service with 'gunicorn your_application.wsgi' bash: gunicorn: command not found

Hey guys,

I have tried to create an app to deploy my model on render.
I have worked off the original code as a stepping stone found on:

I get so far… encountering this message:

Mar 28 01:26:48 PM You should consider upgrading via the ‘pip install --upgrade pip’ command.
Mar 28 01:26:53 PM ==> Uploading build…
Mar 28 01:27:34 PM ==> Build successful :tada:
Mar 28 01:27:34 PM ==> Deploying…
Mar 28 01:28:21 PM ==> Starting service with ‘gunicorn your_application.wsgi’
Mar 28 01:28:21 PM bash: gunicorn: command not found
Mar 28 01:28:20 PM ==> Starting service with ‘gunicorn your_application.wsgi’
Mar 28 01:28:20 PM bash: gunicorn: command not found
Mar 28 01:28:33 PM ==> Starting service with ‘gunicorn your_application.wsgi’
Mar 28 01:28:33 PM bash: gunicorn: command not found

Anyone know how I can fix this?

Thanks for any help!

SOLVED
I had to choose Docker and not Python 3, and worked perfectly!