postgresql.exceptions.ClientCannotConnectError: could not establish connection to server
  CODE: 08001
  LOCATION: CLIENT
CONNECTION: [failed]
  failures[0]:
    NOSSL socket('192.168.8.170', 26257)
    postgresql.exceptions.ProtocolError: expected message of types b'K', but received b'Z' instead
      CODE: 08P01
      LOCATION: CLIENT
CONNECTOR: [IP4] pq://root@192.168.8.170:26257
  category: None
DRIVER: postgresql.driver.pq3.Driver