No provider for ConnectionBackend
Solution 1:
Http is redundant in
providers: [FrameService, Http, { provide: $WINDOW, useValue: window }],
because HttpModule in
imports: [HttpModule, BrowserModule, FormsModule],
provides it already.
Solution 2:
In app.module.ts add:
import { HttpModule } from '@angular/http';
And import module:
imports: [
...
HttpModule
...
],