I run 'ionic serve' and returns nothing in the screen, but in console ERROR NullInjectorError: R3InjectorError(AppModule)

i run ‘ionic serve’ and returns nothing in the screen, but in console ERROR NullInjectorError: R3InjectorError(AppModule)

I really don’t know what to do. I’m still a noob.

Hugs from brazil :grin:

i think the problem is in the provider you are trying to use without injecting it

try to add the following decorator

@Injectable({
  providedIn: 'root'
})