[06:03:59] [Server thread/ERROR]: Failed to save chunk
java.lang.NullPointerException: null
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.handler$onWriteChunkToNBT$zop001(AnvilChunkLoader.java:1251) ~[aye.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75820_a(AnvilChunkLoader.java:425) ~[aye.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.func_75816_a(AnvilChunkLoader.java:171) [aye.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.func_73242_b(ChunkProviderServer.java:202) [on.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.func_186027_a(ChunkProviderServer.java:230) [on.class:?]
	at net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:1006) [oo.class:?]
	at org.spongepowered.common.world.WorldManager.saveWorld(WorldManager.java:532) [WorldManager.class:1.12.2-2555-7.1.0-BETA-2842]
	at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:3951) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.constant$getSaveTickInterval$zja000(MinecraftServer.java:3907) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:685) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_161]