First method is working fine but others has error.
Why am i getting this error. 2 method have same purpose, one of them returns entity, others not.

Help me pls.

**Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [com.akinon.akipay.processor.entity.PaymentSession#6542]
Object of class [com.akinon.akipay.processor.entity.PaymentSession#6542] optimistic locking failed nested exception is org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction.
**

@Override
@CacheEvict(cacheNames = CacheConstants.PAYMENT_SESSION_CACHE, key = "#paymentSession.token + #paymentSession.transactionToken", cacheManager = "redisCacheManager")
public PaymentSession updatePaymentSession(PaymentSession paymentSession) {
    return repository.save(paymentSession); // NO ERROR
}

@Override
public void updatePaymentSessionStatus(PaymentSession paymentSession, SessionTokenStatus status) {
    paymentSession.setStatus(status);
    repository.save(paymentSession); // ERROR (OPT. LOCK)
}

@Override
@Transactional(propagation = Propagation.REQUIRES_NEW)
public void updatePaymentSessionStatus(PaymentSession paymentSession, SessionTokenStatus status) {
    paymentSession.setStatus(status);
    repository.save(paymentSession); // ERROR (OPT. LOCK)
}

@Override
public void updatePaymentSessionStatus(PaymentSession paymentSession, SessionTokenStatus status) {
    paymentSession.setStatus(status);
    repository.saveAndFlush(paymentSession); // ERROR (OPT. LOCK)
}

Used transactional,
used different save method.