NestJS 의존성 주입 문제

 [Nest] 16188  - 2024. 03. 17. 오후 12:19:06   ERROR [ExceptionHandler] Nest can't resolve dependencies of the UsersService (?). Please make sure that the argument "UserRepository" at index [0] is available in the AuthModule context.

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

Error: Nest can't resolve dependencies of the UsersService (?). Please make sure that the argument "UserRepository" at index [0] is available in the AuthModule context.

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

    at Injector.lookupComponentInParentModules (D:\BackEnd\class\section11\11-02-login-authentication\node_modules\@nestjs\core\injector\injector.js:254:19)
    at Injector.resolveComponentInstance (D:\BackEnd\class\section11\11-02-login-authentication\node_modules\@nestjs\core\injector\injector.js:207:33)
    at resolveParam (D:\BackEnd\class\section11\11-02-login-authentication\node_modules\@nestjs\core\injector\injector.js:128:38)
    at async Promise.all (index 0)
    at Injector.resolveConstructorParams (D:\BackEnd\class\section11\11-02-login-authentication\node_modules\@nestjs\core\injector\injector.js:143:27)
    at Injector.loadInstance (D:\BackEnd\class\section11\11-02-login-authentication\node_modules\@nestjs\core\injector\injector.js:70:13)
    at Injector.loadProvider (D:\BackEnd\class\section11\11-02-login-authentication\node_modules\@nestjs\core\injector\injector.js:97:9)
    at D:\BackEn

yarn start:dev 실행 시, 위와 같은 오류가 발생하여, users.module.ts 파일의 exports 부분을 아래와 같이 수정하였습니다.

exports: [
        TypeOrmModule,
        //   원래는 TypeOrmModule이 아닌 => UsersService(강의 기준)
    ],

이렇게 수정하니, 문제는 해결되었는데, 이렇게 수정해도 괜찮은지, 이유가 무엇인지 잘 모르겠어 여쭤봅니다.