Angular 2 Form “Cannot find control with path”

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There should be a formControlName in your HTML form mapped to your component file.

<div *ngFor="let list_item of [0,1,2]; let i=index" class="panel panel-default">
  {{i + 1}}.) <input type="text" formControlName="{{i}}" placeholder="List Item" class="form-control">
</div>

list_items: this.fb.array([
    [''], //0 points to this
    [''], //1 points to this
    [''] //2 points to this
])

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