EditVisitanteDialogComponent.html:10 ERROR Error: formGroup expects a FormGroup instance. Please pass one in.

Estou com este erro no angular

ERROR Error: formGroup expects a FormGroup instance. Please pass one in.

Example:

    <div [formGroup]="myGroup">
      <input formControlName="firstName">
    </div>

    In your class:

    this.myGroup = new FormGroup({
       firstName: new FormControl()
    });
    at Function.ReactiveErrors.missingFormException (forms.js:6347)
    at FormGroupDirective._checkFormPresent (forms.js:6852)
    at FormGroupDirective.ngOnChanges (forms.js:6623)
    at checkAndUpdateDirectiveInline (core.js:12358)
    at checkAndUpdateNodeInline (core.js:13886)
    at checkAndUpdateNode (core.js:13829)
    at debugCheckAndUpdateNode (core.js:14722)
    at debugCheckDirectivesFn (core.js:14663)
    at Object.eval [as updateDirectives] (EditVisitanteDialogComponent.html:10)
    at Object.debugUpdateDirectives [as updateDirectives] (core.js:14648)