output: #fixed code
                                  public T blpopObject(int timeout, String key, Class clazz) {
          this.setSchema(clazz);
          Jedis jedis = null;
          try {
              jedis = jedisPool.getResource();
              List<byte[]> bytes = jedis.blpop(timeout, key.getBytes());
              if (bytes == null || bytes.size() == 0) {
                  return null;
              }
              return getBytes(bytes.get(1));
          } finally {
              jedis.close();
          }
      }
input: #vulnerable code 
                                  public T blpopObject(int timeout, String key, Class clazz) {
          this.setSchema(clazz);
          Jedis jedis = null;
          try {
              List<byte[]> bytes = jedis.blpop(timeout, key.getBytes());
              if (bytes == null || bytes.size() == 0) {
                  return null;
              }
              return getBytes(bytes.get(1));
          } finally {
              jedis.close();
          }
      } 
                              #location 5 
                              #vulnerability type NULL_DEREFERENCE