Error:
You no longer need to import the StorageServiceModule,
since the SESSION_STORAGE and LOCAL_STORAGE injection tokens
are now 'self providing' in the root injector.
Solution:
Remove import { StorageServiceModule } from ‘ngx-webstorage-service’; from the app module along with removing StorageServiceModule from imports on app module. The following import is enough to use localstorage/webstorage in angular
import { LOCAL_STORAGE, StorageService } from 'ngx-webstorage-service';