herokuでModuleNotFoundError: No module named 'config'とエラーが出る

前提・実現したいこと

django+heroku+aws+whitenoiseでWEBページを製作しています。herokuへデプロイし、heroku openしてみたところ、アプリケーションエラーが発生。
ログを確認すると、ModuleNotFoundError: No module named 'config'とエラーが出ていました。
このエラーについて調べてみましたが、解決に至りませんでした。どのようにすればデプロイできるでしょうか。
その他必要な情報があれば追記いたします。よろしくお願いいたします。

発生している問題・エラーメッセージ

2020-03-11T14:40:50.688363+00:00 heroku[web.1]: Starting process with command `gunicorn ecsite.wsgi --log-file -`
2020-03-11T14:40:53.225732+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [4] [INFO] Starting gunicorn 19.9.0
2020-03-11T14:40:53.226259+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [4] [INFO] Listening at: http://0.0.0.0:42544 (4)
2020-03-11T14:40:53.226344+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [4] [INFO] Using worker: sync
2020-03-11T14:40:53.227775+00:00 app[web.1]: /app/.heroku/python/lib/python3.8/os.py:1021: RuntimeWarning: line buffering (buffering=1) isn't supported in binary mode, the default buffer size will be used
2020-03-11T14:40:53.227776+00:00 app[web.1]: return io.open(fd, *args, **kwargs)
2020-03-11T14:40:53.231075+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [9] [INFO] Booting worker with pid: 9
2020-03-11T14:40:53.233923+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [10] [INFO] Booting worker with pid: 10
2020-03-11T14:40:53.502777+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [9] [ERROR] Exception in worker process
2020-03-11T14:40:53.502815+00:00 app[web.1]: Traceback (most recent call last):
2020-03-11T14:40:53.502816+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-03-11T14:40:53.502816+00:00 app[web.1]: worker.init_process()
2020-03-11T14:40:53.502817+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/workers/base.py", line 129, in init_process
2020-03-11T14:40:53.502817+00:00 app[web.1]: self.load_wsgi()
2020-03-11T14:40:53.502817+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
2020-03-11T14:40:53.502818+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-03-11T14:40:53.502818+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-03-11T14:40:53.502818+00:00 app[web.1]: self.callable = self.load()
2020-03-11T14:40:53.502819+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
2020-03-11T14:40:53.502819+00:00 app[web.1]: return self.load_wsgiapp()
2020-03-11T14:40:53.502819+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
2020-03-11T14:40:53.502820+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-03-11T14:40:53.502820+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/util.py", line 350, in import_app
2020-03-11T14:40:53.502820+00:00 app[web.1]: __import__(module)
2020-03-11T14:40:53.502821+00:00 app[web.1]: File "/app/ecsite/wsgi.py", line 7, in <module>
2020-03-11T14:40:53.502821+00:00 app[web.1]: application = get_wsgi_application()
2020-03-11T14:40:53.502822+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
2020-03-11T14:40:53.502822+00:00 app[web.1]: django.setup(set_prefix=False)
2020-03-11T14:40:53.502823+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/__init__.py", line 19, in setup
2020-03-11T14:40:53.502823+00:00 app[web.1]: configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
2020-03-11T14:40:53.502823+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 79, in __getattr__
2020-03-11T14:40:53.502823+00:00 app[web.1]: self._setup(name)
2020-03-11T14:40:53.502824+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 66, in _setup
2020-03-11T14:40:53.502824+00:00 app[web.1]: self._wrapped = Settings(settings_module)
2020-03-11T14:40:53.502824+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 157, in __init__
2020-03-11T14:40:53.502825+00:00 app[web.1]: mod = importlib.import_module(self.SETTINGS_MODULE)
2020-03-11T14:40:53.502825+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/importlib/__init__.py", line 127, in import_module
2020-03-11T14:40:53.502825+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-03-11T14:40:53.502826+00:00 app[web.1]: ModuleNotFoundError: No module named 'config'
2020-03-11T14:40:53.502826+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [9] [INFO] Worker exiting (pid: 9)
2020-03-11T14:40:53.527396+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [10] [ERROR] Exception in worker process
2020-03-11T14:40:53.527402+00:00 app[web.1]: Traceback (most recent call last):
2020-03-11T14:40:53.527403+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-03-11T14:40:53.527403+00:00 app[web.1]: worker.init_process()
2020-03-11T14:40:53.527405+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/workers/base.py", line 129, in init_process
2020-03-11T14:40:53.527406+00:00 app[web.1]: self.load_wsgi()
2020-03-11T14:40:53.527406+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
2020-03-11T14:40:53.527407+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-03-11T14:40:53.527407+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-03-11T14:40:53.527408+00:00 app[web.1]: self.callable = self.load()
2020-03-11T14:40:53.527408+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
2020-03-11T14:40:53.527408+00:00 app[web.1]: return self.load_wsgiapp()
2020-03-11T14:40:53.527409+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
2020-03-11T14:40:53.527409+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-03-11T14:40:53.527410+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/gunicorn/util.py", line 350, in import_app
2020-03-11T14:40:53.527410+00:00 app[web.1]: __import__(module)
2020-03-11T14:40:53.527411+00:00 app[web.1]: File "/app/ecsite/wsgi.py", line 7, in <module>
2020-03-11T14:40:53.527411+00:00 app[web.1]: application = get_wsgi_application()
2020-03-11T14:40:53.527412+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
2020-03-11T14:40:53.527412+00:00 app[web.1]: django.setup(set_prefix=False)
2020-03-11T14:40:53.527413+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/__init__.py", line 19, in setup
2020-03-11T14:40:53.527413+00:00 app[web.1]: configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
2020-03-11T14:40:53.527432+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 79, in __getattr__
2020-03-11T14:40:53.527434+00:00 app[web.1]: self._setup(name)
2020-03-11T14:40:53.527434+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 66, in _setup
2020-03-11T14:40:53.527435+00:00 app[web.1]: self._wrapped = Settings(settings_module)
2020-03-11T14:40:53.527435+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 157, in __init__
2020-03-11T14:40:53.527436+00:00 app[web.1]: mod = importlib.import_module(self.SETTINGS_MODULE)
2020-03-11T14:40:53.527436+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/importlib/__init__.py", line 127, in import_module
2020-03-11T14:40:53.527437+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-03-11T14:40:53.527448+00:00 app[web.1]: ModuleNotFoundError: No module named 'config'
2020-03-11T14:40:53.527449+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [10] [INFO] Worker exiting (pid: 10)
2020-03-11T14:40:53.689397+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [4] [INFO] Shutting down: Master
2020-03-11T14:40:53.689399+00:00 app[web.1]: [2020-03-11 14:40:53 +0000] [4] [INFO] Reason: Worker failed to boot.
2020-03-11T14:40:53.806504+00:00 heroku[web.1]: State changed from starting to crashed
2020-03-11T14:40:53.786688+00:00 heroku[web.1]: Process exited with status 3
2020-03-11T14:41:09.564158+00:00 app[api]: Starting process with command `python manage.py migrate` by user ○○○
2020-03-11T14:41:15.702928+00:00 heroku[run.2638]: State changed from starting to up
2020-03-11T14:41:15.790724+00:00 heroku[run.2638]: Awaiting client
2020-03-11T14:41:15.930403+00:00 heroku[run.2638]: Starting process with command `python manage.py migrate`
2020-03-11T14:41:43.204562+00:00 heroku[run.2638]: State changed from up to complete
2020-03-11T14:41:43.186147+00:00 heroku[run.2638]: Process exited with status 0
2020-03-11T14:42:26.418217+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=aiecsite.herokuapp.com request_id=72af40ab-e63b-4db5-895a-575a929d351b fwd="123.227.40.180" dyno= connect= service= status=503 bytes= protocol=https
2020-03-11T14:42:27.745041+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=aiecsite.herokuapp.com request_id=3e732d48-9e07-4084-a4d2-2220c6c4a6e9 fwd="123.227.40.180" dyno= connect= service= status=503 bytes= protocol=htt
ps