JPA-Hibernate 스크랩 - TroubleShooting

javax.persistence.EntityExistsException: A different object with the same identifier value was already associated with the session

https://velog.io/@dkajffkem/DataIntegrityViolationException-%EC%97%90-%EB%8C%80%ED%95%B4-%EC%95%8C%EC%95%84%EB%B3%B4%EC%9E%90