[Django]-Error message: django.core.exceptions.ImproperlyConfigured: The SECRET_KEY setting must not be empty

The system environment hides the original secret key of the Django app that you downloaded (Ask the owner of the code for the secret key of it or create your own django app and copy the implementation of the code). The Django secret key cannot be customized. Django generates it automatically.

Refer to question: Effects of changing Django's SECRET_KEY