No one was hurt, but it was a close call.
My dad helped me bring a game downstairs once. He was on the bottom of the dolly. We got about 2 stairs from the bottom and he slipped and fell into the wall at the bottom of the landing.
Luckily I didn’t drop the pin on him and he only fell into drywall. Also luckily the townhouse complex had about 3ft with no studs right where he landed.