title: ng-serve constructor error
body: <p>I am working on an Angular js application. While trying to run the dev server, i am getting an error with my <a href="https://github.com/angular/angular-cli/wiki/serve" rel="nofollow noreferrer">ng serve</a> constructor:</p>
  
  <p><a href="https://i.stack.imgur.com/QujSe.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QujSe.png" alt="enter image description here"></a></p>