Angular Group Formation Issue

I keep encountering the following error:

formGroup expects a FormGroup instance. Please pass one in.

This is how it looks in HTML:

<mat-step [stepControl]="firstFormGroup">
<form [formGroup]="firstFormGroup">

And in my TypeScript file, I have this:

firstFormGroup!: FormGroup;

Answer №1

To set up the form group, ensure you have specified the initial value. Include the following in your component code:

  constructor(private _formBuilder: FormBuilder) {}

  ngOnInit() {
    this.formGroup = this._formBuilder.group({
     // insert your form controls in this section 
    });
  }

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