Django AppRegistryNotReady error for signals after editing apps.py to signals

Question

I'm using Django signals and getting a django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet. The Upload model that I'm trying to import in signals.py is not loaded yet. That's why I'm getting the error. I've edited my app's app.py file and settings.py to load apps. Still I am receiving the error. My code is below:

project/apps.py

from django.apps import AppConfig


class EngineConfig(AppConfig):
    name = 'engine.signals'

    def ready(self):
        from engine import signals

settings.py in installed apps

from django.dispatch import receiver
from .models import Upload
from django.db.models.signals import post_save


@receiver(post_save, sender=Upload)
def upload_items(sender, **kwarg):
    pass

What am I doing wrong?

Answer 1

Simply used the dotted path to my model instead of trying to import it

@receiver(post_save, sender='app.model')
def upload_items(sender, **kwarg):
    pass