The command /spawnpoint allows for players to set their spawnpoint to a set of coordinates that are out of bounds. If the player dies afterwards and attempts to respawn, the server crashes.
If the player exits to the title screen while they are dead and the world saves, they will no longer be able to use the world as they will be unable to respawn without crashing the game.
- Use the command /spawnpoint @p ~ ~ ~30000000000
- Kill yourself using /kill @p
- Attempt to respawn (you may need to click "Respawn" twice)