This crash may be problematic on the worlds of mini games. Once you have engaged the lever your Minecraft closes. That's how to reproduce the Crash: 

• All you need is two blocks command and a chest.

• Put the block command horizontally and put the following command: /clone ~ ~1 ~ ~ ~1 ~ ~ ~1 ~2

• Put the second block command, put it in the chain and put the following command: /setblock ~ ~1 ~1 air 0 destroy

•  Put the chest on top of the first block command and put a lever

• - Then press

Warning if this does not work, please rotate the block command or put the correct coordinates!
Thank you for correcting this as soon as possible, my world is blocked.