Error NO_ERRORS_SCHEMA

1. If 'ion-digit-keyboard' is an Angular component and it has 'roundButtons' input, then verify that it is part of this module.
2. If 'ion-digit-keyboard' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.
3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. ("ns]="keyboardSettings.leftActionOptions"

[OscarArgueyo]

Same issue over here. In demo i can make it work but copying into my projecto made that error.