Django 不能'；无法连接到服务器？获取以下错误。如何消除该错误？

无法连接到服务器。获取以下错误。如何消除这个错误

任何帮助都将不胜感激

Traceback (most recent call last):
File "C:\Users\HP\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\base\base.py", line 216, in ensure_connection
self.connect()
File "C:\Users\HP\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\base\base.py", line 194, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\HP\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\postgresql\base.py", line 168, in get_new_connection
connection = Database.connect(**conn_params)
File "C:\Users\HP\AppData\Local\Programs\Python\Python36\lib\site-packages\psycopg2\__init__.py", line 130, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: could not connect to server: Connection refused (0x0000274D/10061)
    Is the server running on host "127.0.0.1" and accepting
    TCP/IP connections on port 5432?
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: could not connect to server: Connection  
refused (0x0000274D/10061)
    Is the server running on host "127.0.0.1" and accepting
    TCP/IP connections on port 5432?

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是否在settings.py文件的DATABASES下检查您的数据库是否具有正确的名称、用户、密码、主机和端口？显示您的数据库设置。DATABASES={'default'：{'ENGINE'：'django.db.backends.postgresql'，'NAME'：'mymdb'，'USER'：'mymdb'，'PASSWORD'：'development'，'HOST'：'127.0.0.1'，'PORT'：'5432'，}