Aw…. busted!
If a prop or setpiece or other object breaks, immediately let someone know.
The Production Manager, the AD, somebody.
It might be something that can be quickly replaced or it might take three days to replace, but finding out it’s broken once you’re rolling is no picnic for anyone.
Don’t be worried about the messenger being shot — only assholes do that anyway. Just get the information to the boss as fast as possible.