Disable mob griefing

[Sataniel98]

However, right now when I'm in the dungeon, ghasts and creepers can destroy the map.
Is there any way to turn the mob griefing off?
-@Schwanzz

Mob griefing should be handled just like any kind of block breaking and can be disabled with the breakBlocks game rule.

[Schwanzz]

Tried that and now the server is crashing...

This is the error report:
https://pastebin.com/A4eXy5D9

[Schwanzz]

Nevermind, I fixed it.

Thanks anyways

[Sataniel98]

I'll definitely have a look at the error you just posted though. It looks like it occurs because a world from which a player joined a dungeon isn't loaded anymore. See #410