Exception 포스트맨으로 확인 시 undefined 에러

1. 에러
   [Nest] 48206 - 01/24/2024, 4:13:26 PM ERROR [ExceptionsHandler] You provided 'undefined' where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.

   TypeError: You provided 'undefined' where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.

   at Object.createInvalidObservableTypeError (/Users/kwonyeji/Documents/nestStudy/a-nest/node_modules/rxjs/dist/cjs/internal/util/throwUnobservableError.js:5:12)

   at Object.innerFrom (/Users/kwonyeji/Documents/nestStudy/a-nest/node_modules/rxjs/dist/cjs/internal/observable/innerFrom.js:93:36)

   at doInnerSub (/Users/kwonyeji/Documents/nestStudy/a-nest/node_modules/rxjs/dist/cjs/internal/operators/mergeInternals.js:22:21)

   at outerNext (/Users/kwonyeji/Documents/nestStudy/a-nest/node_modules/rxjs/dist/cjs/internal/operators/mergeInternals.js:17:70)

   at OperatorSubscriber._this._next (/Users/kwonyeji/Documents/nestStudy/a-nest/node_modules/rxjs/dist/cjs/internal/operators/OperatorSubscriber.js:33:21)

   at Subscriber.next (/Users/kwonyeji/Documents/nestStudy/a-nest/node_modules/rxjs/dist/cjs/internal/Subscriber.js:51:18)

   at /Users/kwonyeji/Documents/nestStudy/a-nest/node_modules/rxjs/dist/cjs/internal/observable/innerFrom.js:120:28

   at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
   
   2.의심 코드
   <main.ts>
   

   import { NestFactory } from '@nestjs/core';
   import { AppModule } from './app.module';
   import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
   import { HttpExceptionFilter } from './httpException.filter';
   
   declare const module: any;
   
   async function bootstrap() {
     const app = await NestFactory.create(AppModule);
     const port = process.env.PORT || 3000;
     app.useGlobalFilters(new HttpExceptionFilter());
   
     const config = new DocumentBuilder()
       .setTitle('Sleact API')
       .setDescription('Sleact 개발을 위한 API 문서입니다.')
       .setVersion('1.0')
       .addTag('connect.sid')
       .build();
     const document = SwaggerModule.createDocument(app, config);
     SwaggerModule.setup('api', app, document);
   
     await app.listen(port);
     console.log(`listening on port ${port}`)
   
     if (module.hot) {
       module.hot.accept();
       module.hot.dispose(() => app.close());
     }
   }
   bootstrap();

3. 에러상황
   회원가입 구현 후 에러 확인 하려고 포스트맨 으로 요청 시 200성공이 떨어지는게 아니라 해당 에러가 발생합니다. 값을 모두 넣어도 같은 에러가 발생하고 console 찍었을떄 아예 controller에 접근하지도 못했습니다. 설정이 잘못된 건지 잘 모르겠습니다 ㅠ

@Injectable()
export class UndefinedToNullInterceptor implements NestInterceptor {
    intercept(context: ExecutionContext, next: CallHandler<any>): Observable<any> | Promise<Observable<any>> {
        return 
         next
        .handle()
        .pipe(map((data) => (data === undefined ? null : data)));
    }
}