djangoのアプリをherokuにデプロイしたいのですがエラーが出ます。

error

Traceback (most recent call last): File "manage.py", line 22, in <module> main() File "manage.py", line 18, in main execute_from_command_line(sys.argv) File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line utility.execute() File "/app/.heroku/python/lib/python3.8/site-packages/django/core/management/__init__.py", line 386, in execute settings.INSTALLED_APPS File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 87, in __getattr__ self._setup(name) File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 74, in _setup self._wrapped = Settings(settings_module) File "/app/.heroku/python/lib/python3.8/site-packages/django/conf/__init__.py", line 183, in __init__ mod = importlib.import_module(self.SETTINGS_MODULE) File "/app/.heroku/python/lib/python3.8/importlib/__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 1014, in _gcd_import File "<frozen importlib._bootstrap>", line 991, in _find_and_load File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 671, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 848, in exec_module File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed File "/app/MovieReview/settings.py", line 78, in <module> 'DIRS': [BASE_DIR / 'templates'], TypeError: unsupported operand type(s) for /: 'str' and 'str