How Can i register component commonly in project (Ionic 4)

I have created one component i want to use on all page but when i am register on 2nd page it’s gives error

Error: Type DatePickerControlComponent is part of the declarations of 2 modules: DashboardPageModule and TrackingPageModule! Please consider moving DatePickerControlComponent to a higher module that imports DashboardPageModule and TrackingPageModule. You can also create a new NgModule that exports and includes DatePickerControlComponent then import that NgModule in DashboardPageModule and TrackingPageModule.

how i can register commonly for all page, i had register in app.module but that not working

Hay guys , can any one reply on this…