Guy had a dream that he drowned while crossing a certain bridge. R’ Chaim told him to ignore it, as we pasken that we don’t listen to dreams [please: the psak is not the point]. He repeatedly had the dream, and he kept giving him the same pask. He traveled over that bridge… and drowned! Family came to R’ Chaim, obviously upset. He told them: My psak was correct, and I would do the same even after having this knowledge!
I highly doubt this story is true.