how to fix this error in my angular 4 app? : [I used this code in my component `<button type="button" class="btn btn-primary "(click) ="toggle()" >Create</button>
`
and add this to app.component.html `<app-table *ngif="showFirst"></app-table>
<app-form *ngif="!showFirst"></app-form>`
][1]


  [1]: https://i.stack.imgur.com/eR44y.png