title: Zone.js in Angular 6
body: <p>I created an application with jhipster. It is working but when I make a request to backend side I get 401(Unauthorized) error with zone.js. I think my code is working but I think that I have a general error.</p>
  
  <p>I made some researches about zone.js but I could not find any solution. Do you have any idea?</p>