title: I m facing an issue related to ngx-spinner
body: <p>ERROR in : 'ngx-spinner' is not a known element:
  1. If 'ngx-spinner' is an Angular component, then verify that it is part of this module.
  2. If 'ngx-spinner' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("[ERROR ->]