오늘의 트러블슈팅을 작성해보겠다.문제 상황drf | django.db.utils.OperationalError: connection to server at "localhost" (::1), port 5432 failed: Connection refuseddrf | Is the server running on that host and accepting TCP/IP connections?drf | connection to server at "localhost" (127.0.0.1), port 5432 failed: Connection refuseddrf | Is the server running on that host and accepting ..