Redirect http url to https for django application served by Apache without virtualHost

Question

I have a django application running on http://localhost:8081 I want to redirect it to https://localhost:8081

I have following in my settings.py:

SECURE_SSL_REDIRECT = True
SESSION_COOKIE_SECURE = True
CSRF_COOKIE_SECURE = True

httpd.conf file has been modified to:

WSGIScriptAlias / /path/to/django/application/wsgi.py
#WSGIPythonHome /python3.9
WSGIPythonPath /path/to/django/application:/python3.9/lib/python3.9/site-packages

<Directory /path/to/django/application>
<Files wsgi.py>
Require all granted
</Files>
</Directory>

When I am trying to execute my django application with command:

/python3.9/bin/python3 manage.py runserver 8081

it gives this error on webpage:

This site can’t provide a secure connection
localhost sent an invalid response.
ERR_SSL_PROTOCOL_ERROR

I have not configured virtual environment and have default python2.7.

Installed python3.9 at different location on machine to serve django.

Any thoughts what I'm missing to make it work.