Помогите Ошибка в консоли. Не знаю что делать...

[15:57:52 ERROR]: Encountered an unexpected exception
java.lang.NullPointerException
at net.minecraft.server.v1_11_R1.NBTTagCompound.a(SourceFile:427) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTTagCompound.load(SourceFile:76) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTTagCompound.a(SourceFile:427) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTTagCompound.load(SourceFile:76) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTTagCompound.a(SourceFile:427) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTTagCompound.load(SourceFile:76) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTCompressedStreamTools.a(NBTCompressedStreamTools.java:84) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTCompressedStreamTools.a(NBTCompressedStreamTools.java:53) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.NBTCompressedStreamTools.a(NBTCompressedStreamTools.java:43) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.RegionFileCache.d(RegionFileCache.java:87) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.ChunkRegionLoader.loadChunk(ChunkRegionLoader.java:55) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.craftbukkit.v1_11_R1.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:21) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.craftbukkit.v1_11_R1.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:1) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.craftbukkit.v1_11_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:336) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.craftbukkit.v1_11_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.craftbukkit.v1_11_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:137) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:120) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:116) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.l(MinecraftServer.java:373) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.a(MinecraftServer.java:337) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.DedicatedServer.init(DedicatedServer.java:272) ~[server.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:544) [server.jar:git-Spigot-3fb9445-6e3cec8]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_201]
[15:57:52 ERROR]: This crash report has been saved to: /home/servers/usr44237/mc6779/./crash-reports/crash-2019-11-20_15.57.52-server.txt
[15:57:52 INFO]: Stopping server
[15:57:52 INFO]: [Vault] Disabling Vault v1.7.1-b91
[15:57:52 INFO]: [AutoSaveWorld] Disabling AutoSaveWorld v4.15
[15:57:52 INFO]: AutoSaving
[15:57:53 INFO]: AutoSave Complete
[15:57:59 INFO]: Saving players
[15:57:59 INFO]: Saving worlds
[15:57:59 INFO]: Saving chunks for level 'city'/Overworld