Node.js TypeError：connect ECONNREFUSED 127.0.0.1:3000

TypeError：connect ECONNREFUSED 127.0.0.1:3000

我认为这与网站安全有关,但我不确定.这是我正在使用的代码.

const Browser = require('zombie');
Browser.localhost('test.com',3000);
describe('User visits signup page',function() {
const browser = new Browser();
before(function(donE) {
    browser.visit('/',donE);
});
describe('submits form',function() {
    before(function(donE) {
        browser
        .fill('Username','*******')
        .fill('password','*******')
        .pressButton('Submit',donE);
    });
    it('should be successful',function() {
        browser.assert.success();
    });
    it('should see welcome page',function() {
        browser.assert.text('title','Welcome To Brains Depot');
    });
  });
});