[Bug] Random game crashes when i perform certain commands

[MAXStephen1]

2.0.0

game crash

To Reproduce

1. well one of the commands that happened was when i typed "/pv s_a_d" and my game just crashed
2. and another one was when i would close minecraft while in the crystal hollows, when i open minecraft back up, as soon as i go into the dwarven mines, my game crashes

uhhh, the game not to crash?

https://imgur.com/a/8N9befb

The game crashed whilst unexpected error Error: java.lang.NullPointerException: Unexpected error Exit Code: -1