Ion-tab-button' is not a known element what shall i do ? i use ionic v 4.12

Ionic Framework
1

ncaught 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. ("

    [ERROR ->]
    Home
    </ion-i"): ng:///AppModule/GamkaDetailPage.html@14:6
    ‘ion-tab-button’ is not a known element:

  3. If ‘ion-tab-button’ is an Angular component, then verify that it is part of this module.

  4. If ‘ion-tab-button’ is a Web Component then add ‘CUSTOM_ELEMENTS_SCHEMA’ to the ‘@NgModule.schemas’ of this component to suppress this message. ("

    [ERROR ->]
    Settings
    <ion-icon name=“setti”): ng:///AppModule/GamkaDetailPage.html@20:6
    ‘ion-tab-bar’ is not a known element:

  5. If ‘ion-tab-bar’ is an Angular component, then verify that it is part of this module.

  6. If ‘ion-tab-bar’ is a Web Component then add ‘CUSTOM_ELEMENTS_SCHEMA’ to the ‘@NgModule.schemas’ of this component to suppress this message. ("
    Settings Content

    [ERROR ->]