angular 2 error: Can't resolve all parameters for FormGroup

Question

I am following Thoughtram\'s tutorial for FormBuilder http://blog.thoughtram.io/angular/2016/06/22/model-driven-forms-in-angular-2.html I copied the code and changed a few

Answer 1

One more reason for this error is when you imported formgroup twice. I removed it in my app module, now it works for me, Hope it help someone.

Answer 2

Did you add the Angular reactive forms module as an import to your module? It looks like it's missing the services that are registered by that module.

(am on my phone, so sorry for the brief answer)

Edit

This is what I mean:

import { NgModule } from '@angular/core';
import { BrowserModule } from '@anglar/platform-browser';
import { ReactiveFormsModule } from '@angular/forms';

@NgModule({
  imports: [BrowserModule, ReactiveFormsModule],
  declarations: [AppComponent],
  bootstrap: [AppComponent]
})
export class AppModule {}

Note the import of ReactiveFormsModule