#vulnerable code 
                                @Override
    public void removeAll(String cacheName) {
        try {
            ehcache.removeAll(cacheName);
            redisCache.removeAll(cacheName);
        } finally {
            Jboot.me().getMq().publish(new JbootEhredisMessage(clientId, JbootEhredisMessage.ACTION_REMOVE_ALL, cacheName, null), channel);
        }
    } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Override
    public void removeAll(String cacheName) {
        try {
            ehcache.removeAll(cacheName);
            redisCache.removeAll(cacheName);
        } finally {
            publishMessage(JbootEhredisMessage.ACTION_REMOVE_ALL, cacheName, null);
        }
    }