Cannot Deploy on Heroku

[sciffany]

We get this error when trying to deploy on Heroku

RuntimeError: Model class django.contrib.contenttypes.models.ContentType doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS

2024-12-21T04:47:26.662965+00:00 app[web.1]: [2024-12-20 22:47:26 -0600] [9] [ERROR] Exception in worker process
2024-12-21T04:47:26.662965+00:00 app[web.1]: Traceback (most recent call last):
2024-12-21T04:47:26.662965+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/arbiter.py", line 609, in spawn_worker
2024-12-21T04:47:26.662965+00:00 app[web.1]: worker.init_process()
2024-12-21T04:47:26.662966+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/uvicorn/workers.py", line 66, in init_process
2024-12-21T04:47:26.662966+00:00 app[web.1]: super(UvicornWorker, self).init_process()
2024-12-21T04:47:26.662966+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/workers/base.py", line 134, in init_process
2024-12-21T04:47:26.662967+00:00 app[web.1]: self.load_wsgi()
2024-12-21T04:47:26.662967+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/workers/base.py", line 146, in load_wsgi
2024-12-21T04:47:26.662967+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2024-12-21T04:47:26.662967+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/base.py", line 67, in wsgi
2024-12-21T04:47:26.662968+00:00 app[web.1]: self.callable = self.load()
2024-12-21T04:47:26.662968+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
2024-12-21T04:47:26.662968+00:00 app[web.1]: return self.load_wsgiapp()
2024-12-21T04:47:26.662968+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/app/wsgiapp.py", line 48, in load_wsgiapp
2024-12-21T04:47:26.662969+00:00 app[web.1]: return util.import_app(self.app_uri)
2024-12-21T04:47:26.662969+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/gunicorn/util.py", line 371, in import_app
2024-12-21T04:47:26.662969+00:00 app[web.1]: mod = importlib.import_module(module)
2024-12-21T04:47:26.662969+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/importlib/__init__.py", line 127, in import_module
2024-12-21T04:47:26.662970+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2024-12-21T04:47:26.662970+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
2024-12-21T04:47:26.662970+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
2024-12-21T04:47:26.662970+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
2024-12-21T04:47:26.662970+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
2024-12-21T04:47:26.662971+00:00 app[web.1]: File "<frozen importlib._bootstrap_external>", line 850, in exec_module
2024-12-21T04:47:26.662971+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
2024-12-21T04:47:26.662971+00:00 app[web.1]: File "/app/gph/asgi.py", line 21, in <module>
2024-12-21T04:47:26.662971+00:00 app[web.1]: from .routing import websocket_urlpatterns
2024-12-21T04:47:26.662972+00:00 app[web.1]: File "/app/gph/routing.py", line 3, in <module>
2024-12-21T04:47:26.662972+00:00 app[web.1]: from puzzles.messaging import TeamNotificationsConsumer, HintsConsumer
2024-12-21T04:47:26.662972+00:00 app[web.1]: File "/app/puzzles/messaging.py", line 21, in <module>
2024-12-21T04:47:26.662972+00:00 app[web.1]: from puzzles.context import Context
2024-12-21T04:47:26.662972+00:00 app[web.1]: File "/app/puzzles/context.py", line 16, in <module>
2024-12-21T04:47:26.662973+00:00 app[web.1]: from puzzles import models
2024-12-21T04:47:26.662973+00:00 app[web.1]: File "/app/puzzles/models.py", line 10, in <module>
2024-12-21T04:47:26.662973+00:00 app[web.1]: from **django.contrib.auth.models import User**
2024-12-21T04:47:26.662973+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/django/contrib/auth/models.py", line 5, in <module>
2024-12-21T04:47:26.662973+00:00 app[web.1]: from django.contrib.contenttypes.models import ContentType
2024-12-21T04:47:26.662974+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/django/contrib/contenttypes/models.py", line 137, in <module>
2024-12-21T04:47:26.662974+00:00 app[web.1]: class ContentType(models.Model):
2024-12-21T04:47:26.662974+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.9/site-packages/django/db/models/base.py", line 132, in __new__
2024-12-21T04:47:26.662974+00:00 app[web.1]: raise RuntimeError(
2024-12-21T04:47:26.662974+00:00 app[web.1]: RuntimeError: Model class django.contrib.contenttypes.models.ContentType doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS.