#fixed code
                                public void replyToStatus(String content, String replyTo) throws ArchivedGroupException {
        Status originalStatus = statusRepository.findStatusById(replyTo);
        Group group = null;
        if (originalStatus.getGroupId() != null) {
            group = groupService.getGroupById(originalStatus.getDomain(), originalStatus.getGroupId());

            if (group.isArchivedGroup()) {
               throw new ArchivedGroupException();
            }
        }
        if (!originalStatus.getReplyTo().equals("")) {
            // Original status is also a reply, replying to the real original status instead
            Status realOriginalStatus = statusRepository.findStatusById(originalStatus.getDiscussionId());
            Status replyStatus = createStatus(
                    content,
                    realOriginalStatus.getStatusPrivate(),
                    group,
                    realOriginalStatus.getStatusId(),
                    originalStatus.getStatusId(),
                    originalStatus.getUsername());

            discussionRepository.addReplyToDiscussion(realOriginalStatus.getStatusId(), replyStatus.getStatusId());
        } else {
            // The original status of the discussion is the one we reply to
            Status replyStatus =
                    createStatus(content,
                            originalStatus.getStatusPrivate(),
                            group,
                            replyTo,
                            replyTo,
                            originalStatus.getUsername());

            discussionRepository.addReplyToDiscussion(originalStatus.getStatusId(), replyStatus.getStatusId());
        }
    }
#vulnerable code 
                                public void replyToStatus(String content, String replyTo) throws ArchivedGroupException {
        Status originalStatus = statusRepository.findStatusById(replyTo);
        Group group = null;
        if (originalStatus.getGroupId() != null) {
            group = groupService.getGroupById(originalStatus.getDomain(), originalStatus.getGroupId());
        }
        if (group.isArchivedGroup()) {
           throw new ArchivedGroupException();
        }
        if (!originalStatus.getReplyTo().equals("")) {
            // Original status is also a reply, replying to the real original status instead
            Status realOriginalStatus = statusRepository.findStatusById(originalStatus.getDiscussionId());
            Status replyStatus = createStatus(
                    content,
                    realOriginalStatus.getStatusPrivate(),
                    group,
                    realOriginalStatus.getStatusId(),
                    originalStatus.getStatusId(),
                    originalStatus.getUsername());

            discussionRepository.addReplyToDiscussion(realOriginalStatus.getStatusId(), replyStatus.getStatusId());
        } else {
            // The original status of the discussion is the one we reply to
            Status replyStatus =
                    createStatus(content,
                            originalStatus.getStatusPrivate(),
                            group,
                            replyTo,
                            replyTo,
                            originalStatus.getUsername());

            discussionRepository.addReplyToDiscussion(originalStatus.getStatusId(), replyStatus.getStatusId());
        }
    } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE