How to do register step ionic 3

Hello everyone, I have a problem, I am trying to make a record for my ionic application but I encounter a problem, ion-step is not a valid element, someone has some way of doing it

template: <ion-stepper #stepper (selectIndexChange)="selectChange($event)"> <ion-step label="Step1" description="Step1 description"> <h2>Step1 Content</h2> <p>Step1 Content</p> <button ion-button small ionicStepperNext>Next</button> </ion-step> <ion-step label="Step2 - Step2 - Step2" description="Step1 description"> <h2>Step2 Content</h2> <p>Step2 Content</p> <button ion-button color="light" small ionicStepperPrevious>Previous</button> </ion-step> </ion-stepper>

selectChange(e) {
console.log(e);
}