[22/02/24] 삭제하다가TransactionRequiredException

javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'remove' call

찾아 본 해결방법 : @Transactional 를 repository의 deleteBy~메소드에 붙여준다.
참고 https://breakcoding.tistory.com/333

  @Transactional
    void deleteByMemberEntity_IdAndOnClassEntity_Id(Long memberId, Long onClassId);

정말 잘 된다!