Getting Error: Template parse errors: 'ion-tab-button' is not a known element:

Ionic Framework ionic-v3
1 
ERROR Error: Uncaught (in promise): Error: Template parse errors:
'ion-tab-button' is not a known element:
1. If 'ion-tab-button' is an Angular component, then verify that it is part of this module.
2. If 'ion-tab-button' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("

  <ion-tab-bar slot="bottom">
    [ERROR ->]<ion-tab-button tab="dashboard">
      <ion-icon name="flash"></ion-icon>
      <ion-label>Tab One</i"): ng:///TabsPageModule/TabsPage.html@24:4
'ion-tab-button' is not a known element:
1. If 'ion-tab-button' is an Angular component, then verify that it is part of this module.
2. If 'ion-tab-button' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("
    </ion-tab-button>

    [ERROR ->]<ion-tab-button tab="allfault">
      <ion-icon name="apps"></ion-icon>
      <ion-label>Tab Two</ion"): ng:///TabsPageModule/TabsPage.html@29:4
'ion-tab-button' is not a known element:
1. If 'ion-tab-button' is an Angular component, then verify that it is part of this module.
2. If 'ion-tab-button' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("
    </ion-tab-button>
2

Says there in the error message. There’s no such thing as ion-tab-button in Ionic V3. It’s an Ionic V4 component.