Angular 2 SyntaxError: Unexpected token < in>)

Question

I am calling the web API from my Angular2 Component service in Visual Studio, but continuously I am getting the error \"Unexpected token < in JSON at position 0 at JS

Answer 1

-I recreated my component service

import { Injectable } from '@angular/core';
import { HttpClient, HttpErrorResponse } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/throw';
import 'rxjs/add/operator/catch';
import 'rxjs/add/operator/do';
import { IDetails } from '../share/Details';

    @Injectable()
    export class AniversaryService {
        private url = 'http://localhost:60975/api/ImageService';
        constructor(private _http: HttpClient) { }
        getDetails(): Observable {
            return this._http.get(this.url)
                .do(data => console.log(JSON.stringify(data)))
                .catch(this.handleError);
        }
        private handleError(err: HttpErrorResponse) {
            console.log(err.message);
            return Observable.throw(err.message);
        }
    }

now it's accepting the data without any error.