Ionic2 : No provider for ConnectionBackend? - ionic2

Question

I am trying to read json file data to my Html page, but getting 'No provider for ConnectionBackend!
See below code
Home.ts
import { Component } from '#angular/core';
import { NavController ,Platform} from 'ionic-angular';
import { SampleDataService } from '../../providers/sample-data-service';
#Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
myjsondata:any;
constructor(public navCtrl: NavController, platform: Platform,
sampleDataService:SampleDataService) {
sampleDataService.getJsonData().subscribe((data) => {
console.log("what is in the data ", data);
this.myjsondata = data;
});
}
ngOnInit(){}
}
app.component.ts
import { SampleDataService } from '../providers/sample-data-service';
import { Http } from '#angular/http';
#Component({
templateUrl: 'app.html',
providers:[SampleDataService,Http]
})
export class MyApp {
#ViewChild(Nav) nav: Nav;
rootPage: any = HomePage;
pages: Array<{title: string, component: any}>;
constructor(public platform: Platform, public statusBar: StatusBar,
public splashScreen: SplashScreen, sampleDataService:SampleDataService,
http:Http) {
statusBar.styleDefault();
sampleDataService.getJsonData();
this.initializeApp();
app.module.ts
import { SampleDataService } from '../providers/sample-data-service';
import { Http} from '#angular/http';
#NgModule({
declarations: [
MyApp,
HomePage,
ListPage,
About,
Contact,
AboutCity
],
imports: [
BrowserModule,
IonicModule.forRoot(MyApp)
//AutoCompleteModule,
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
ListPage,
About,
Contact,
AboutCity
],
providers: [
StatusBar,
SplashScreen,
{provide: ErrorHandler, useClass: IonicErrorHandler},
SampleDataService,
Http
]
})
I tried a lot but not getting solution why this error is.
Can please anyone help me.

Answer 1

You have to import HttpModule in the imports section in the app.module.ts
Also, remove the Http from the providers.
import { SampleDataService } from '../providers/sample-data-service';
import { HttpModule} from '#angular/http';
#NgModule({
declarations: [
MyApp,
HomePage,
ListPage,
About,
Contact,
AboutCity
],
imports: [
BrowserModule,
HttpModule,
IonicModule.forRoot(MyApp)
//AutoCompleteModule,
],
bootstrap: [IonicApp],
entryComponents: [
MyApp,
HomePage,
ListPage,
About,
Contact,
AboutCity
],
providers: [
StatusBar,
SplashScreen,
{provide: ErrorHandler, useClass: IonicErrorHandler},
SampleDataService,
]
})
Please see this highly voted answer as well.