No crash so far.
Is it possible that the prediction just might be wrong?
In my working days, I was kind of the investment "guru" for my office, and I always had to be careful to disclaim whatever advice I might give, lest I lead someone astray and get in trouble for not being a licensed financial adviser. (I never went for the various certifications.) It was basically simple working people who hadn't a clue about how markets work. I would often be asked "what do you think the markets are going to do?", and I would tell them that if I could predict that kind of thing, I wouldn't be working there, I'd be investing and making money hand over fist at it. No one has a crystal ball.