Reproduction
A class registered directly must have its own @Injectable() metadata:
src/app.module.ts
import { Module, createApp } from 'func'
class ProjectService {}
@Module({ providers: [ProjectService] })
class AppModule {}
createApp(AppModule)How to fix it
Add @Injectable() to the class. A subclass of an injectable base class still needs its own decorator. A Provider object must contain a valid provide token and exactly one of useClass, useValue, or useFactory. useClass also requires an injectable class, and useFactory.inject may contain valid tokens only.
Context and Args are system values and cannot be replaced through a Module Provider or test override. Supply their invocation environment through BootstrapOptions, Invoker.invoke, or TestingApp.invoke.