Node.js, erro do PostgreSQL:nenhuma entrada pg_hba.conf para o host

var conString = "pg://admin:[email protected]:5432/Employees";
var client = new pg.Client(conString);
client.connect();

var client = new pg.Client({
    user: "admin",
    password: "guest",
    database: "Employees",
    port: 5432,
    host: "localhost",
    ssl: true
}); 
client.connect();