Error in ./MyApp class MyApp - caused by: No component factory found for OrderServices

Dear,

i faced a porblem in ionic 2. when i run my project, it show error “Error in ./MyApp class MyApp - caused by: No component factory found for OrderServices”.

order.ts

import { Component } from ‘@angular/core’;
import { NavController } from ‘ionic-angular’;
import { OrderServices } from ‘…/…/app/services/order.service’;

@Component({
selector: ‘orders’,
templateUrl: ‘order.html’
})
export class OrderPage {
items: any;
category: any;
limit:any;
constructor(public navCtrl: NavController, private orderService:OrderServices) {

}

ngOnInit(){

this.getPosts(this.category, this.limit);

}

getDefaults(){

  this.category = 'sports';
  this.limit = 10;

}

getPosts(category, limit){

this.orderService.getPosts(category, limit).subscribe(response => {
  this.items = response.data.children;
});

}
order.service.ts

import {Injectable} from ‘@angular/core’;
import {Http} from ‘@angular/http’;
import ‘rxjs/Rx’;

@Injectable()
export class OrderServices{
http:any;
baseUrl: String;

constructor(http:Http){
    this.http = http;
    this.baseUrl = 'https://www.reddit.com/r';
}

getPosts(category, limit){
    debugger
    return this.http.get(this.baseUrl+'/'+category+'/top.json?limit='+limit)
        .map(res => res.json());
}

}