问Nest无法解决UserService的依赖关系

EN

Nest can't resolve dependencies of the UserService (?, SettingsService). Please make sure that the argument UserModel at index [0] is available in the AuthModule context.

    Potential solutions:
    - If UserModel is a provider, is it part of the current AuthModule?
    - If UserModel is exported from a separate @Module, is that module imported within AuthModule?
      @Module({
        imports: [ /* the Module containing UserModel */ ]
      })

@Module({
  imports: [
    PassportModule.register({ defaultStrategy: 'jwt' }),
    JwtModule.register({
      secretOrPrivateKey: config.auth.secret,
      signOptions: {
        expiresIn: config.auth.expiresIn,
      },
    }),
    UserModule,
    SettingsModule,
  ],
  controllers: [AuthController],
  providers: [
    AuthService,
    JwtStrategy,
    LocalStrategy,
    UserService,
    SettingsService,
    Logger,
    ... other services,
  ],
  exports: [PassportModule, AuthService],
})
export class AuthModule {}

@Module({
  imports: [
    MongooseModule.forFeature([{ name: 'User', schema: UserSchema }]),
    SettingsModule,
  ],
  controllers: [UserController],
  providers: [UserService],
  exports: [UserService],
})
export class UserModule {}

@Module({
  imports: [
    AuthModule,
    UserModule,
    SettingsModule,
    MongooseModule.forRoot(config.db.url),
    WinstonModule.forRoot({
      level: config.logger.debug.level,
    }),
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

@Injectable()
export class UserService {
  constructor(@InjectModel('User') private readonly userModel: Model<User>,
              private readonly settingsService: SettingsService) {}

  public async create(user: any): Promise<UserDto> {
    ...
  }