Store massive amounts of one item type in a single chest.
Mods introducing new content into the game.
More than just chests.
When robot deconstructs chest there is a nil exception in the mod.
This will be fixed when Factorio 0.13.13 comes out. The chests aren't meant to be deconstructed so I added an entity prototype flag for 0.13.13 that lets you turn off the ability to deconstruct an entity.
Fixed.