PG库报错

[2023-02-03 09:38:49,992] [SSHConnectPG.py:54] [SSHConnectPG:connect] [ERROR]- 数据库连接失败,  server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.
Traceback (most recent call last):
  File "/data01/ruiqi/git_release/ruiqi_v1.0T4/ruiqi_interface_v1.0T4/ruiqi/information_restful_mobile/utils/SSHConnectPG.py", line 50, in connect
    port=self.server.local_bind_port)
  File "/data01/python3/lib/python3.6/site-packages/psycopg2-2.8.6-py3.6-linux-x86_64.egg/psycopg2/__init__.py", line 127, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.