CODEWITHSUNDEEP
angularangular6
Ajinkya Patil
Ajinkya Patil

Reputation: 21

No provider for connection backend

I was trying to use my services classes in components , I did not get any compilation error, but got below error in browser console

ng:///CoreModule/LayoutComponent.ngfactory.js:418 ERROR Error: StaticInjectorError(AppModule)[ConnectionBackend]:
StaticInjectorError(Platform: core)[ConnectionBackend]: NullInjectorError: No provider for ConnectionBackend!

Upvotes: 2

Views: 598

Answers (2)

Aniket Avhad
Aniket Avhad

Reputation: 4145

Import the HttpModule in your module. The HttpModule registers providers for all its services.

import {HttpModule} from '@angular/http';

@NgModule({
 imports: [HttpModule], 
 declarations: [
        // Your components
  ],
  providers: [
    // your services

  ],
  bootstrap: [AppComponent]
})

Upvotes: 1

Nenad Radak
Nenad Radak

Reputation: 3688

You need to provide service if you want to use it.to add service in app.module.ts 

 @NgModule({
  imports: [], 
  declarations: [],
  providers: [ConnectionBackend], <- add here your service
  bootstrap: [AppComponent]
})

Upvotes: 1

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