Help for responding to people who say: Buddha never said there's nothing after parinibbana

[RobertK]

See also this thread

What do you think of those who say there's nothing after the end of namarupa?

Some people (apparently also monks) say that after the end of namarupa, the 6 senses, the 5 aggregates, etc., there is NOTHING, no existence, just non-existence. But there are people who say that after the end of namarupa, there is a peaceful experience of nibbana that is beyond namarupa (this experience would be neither mental nor physical). What do you think about this? And what does Pa Auk say about this? Thanks in advance May all beings be happy