Im trying to make a api call to my server database, but its not currenty working.

I have the following error:

    Type 'Subscription' is not assignable to type 'Observable<Comment[]>'.
  Property '_isScalar' is missing in type 'Subscription'.

What im i doing wrong and why?

import { Injectable } from '@angular/core';
import { Http, RequestOptions, URLSearchParams } from '@angular/http';
import {Observable} from 'rxjs/Observable';
import { Comment } from './models/comment'
import 'rxjs/add/operator/map';


@Injectable()
export class CoreService {

  constructor(private http: Http, private URLSearchParams : URLSearchParams) { }

  options = [];
  result = [];

  getUserByName(name: string): Observable<Comment[]> {

    let url = "http://localhost:8080/api";


    return this.http.get(url)
        .map(response => response.json())
        .subscribe(result => this.result = response);
  }

}

comment:

    export class Comment {
    constructor(
        public text:string
    ){}
}