Merge pull request #88 from imdangg/develop

fix

Author: lalabulla

setting-service/setting-persistence/src/main/java/com/project/imdang/setting/service/persistence/mapper/NotificationPersistenceMapper.java

@@ -11,7 +11,7 @@ public class NotificationPersistenceMapper {
 
     public NotificationEntity notificationToNotificationEntity(Notification notification) {
         return NotificationEntity.builder()
-                .id(notification.getId().getValue())
+                .id(notification.getId() != null ? notification.getId().getValue() : null)
                 .category(notification.getCategory())
                 .message(notification.getMessage())
                 .createdAt(notification.getCreatedAt())