実現したいこと

youtubeにて djangoでデプロイしようとし requirements.txt, requirements.dev.txt Procfile,runtimeファイル を作成し、settings.py にて書き換えをし、デプロイを行おうとした

発生している問題

python manage.py runserver　時に　エラーが発生

tem check identified no issues (0 silenced).
Exception in thread django-main-thread:
Traceback (most recent call last):
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/utils/asyncio.py", line 33, in inner
    return func(*args, **kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/base/base.py", line 200, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/utils/asyncio.py", line 33, in inner
    return func(*args, **kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 209, in get_new_connection
    conn = Database.connect(**conn_params)
sqlite3.OperationalError: unable to open database file

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/threading.py", line 973, in _bootstrap_inner
    self.run()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/threading.py", line 910, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/core/management/commands/runserver.py", line 121, in inner_run
    self.check_migrations()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/core/management/base.py", line 486, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/migrations/executor.py", line 18, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/migrations/loader.py", line 53, in __init__
    self.build_graph()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/migrations/loader.py", line 220, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/migrations/recorder.py", line 77, in applied_migrations
    if self.has_table():
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/migrations/recorder.py", line 55, in has_table
    with self.connection.cursor() as cursor:
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/utils/asyncio.py", line 33, in inner
    return func(*args, **kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/base/base.py", line 259, in cursor
    return self._cursor()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/base/base.py", line 235, in _cursor
    self.ensure_connection()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/utils/asyncio.py", line 33, in inner
    return func(*args, **kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/utils/asyncio.py", line 33, in inner
    return func(*args, **kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/base/base.py", line 200, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/utils/asyncio.py", line 33, in inner
    return func(*args, **kwargs)
  File "/Users/nishimuraryoutarou/opt/anaconda3/envs/app4/lib/python3.9/site-packages/django/db/backends/sqlite3/base.py", line 209, in get_new_connection
    conn = Database.connect(**conn_params)
django.db.utils.OperationalError: unable to open database file

ソースコード

python manage.py runserver

自分で試したこと

google で検索

補足情報

youtubeにて 【無料簡単】Django Herokuデプロイチュートリアル