[23:18:14] [Server thread/INFO]: LegoCraftNW issued server command: /npc tphere
[23:18:14] [Server thread/ERROR]: Could not pass event PlayerChangedWorldEvent to IslandBorder vBuild 3
org.bukkit.event.EventException: null
	at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:37) ~[patched_1.12.2.jar:git-Paper-1613]
	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.12.2.jar:git-Paper-1613]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.12.2.jar:git-Paper-1613]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:513) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.PlayerList.moveToWorld(PlayerList.java:753) ~[patched_1.12.2.jar:git-Paper-1613]
	at org.bukkit.craftbukkit.v1_12_R1.entity.CraftPlayer.teleport(CraftPlayer.java:655) ~[patched_1.12.2.jar:git-Paper-1613]
	at org.bukkit.craftbukkit.v1_12_R1.entity.CraftEntity.teleport(CraftEntity.java:310) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.citizensnpcs.api.npc.AbstractNPC.teleport(AbstractNPC.java:384) ~[?:?]
	at net.citizensnpcs.api.npc.AbstractNPC.teleport(AbstractNPC.java:414) ~[?:?]
	at net.citizensnpcs.commands.NPCCommands.tphere(NPCCommands.java:1841) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_211]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_211]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_211]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_211]
	at net.citizensnpcs.api.command.CommandManager.executeMethod(CommandManager.java:155) ~[?:?]
	at net.citizensnpcs.api.command.CommandManager.execute(CommandManager.java:87) ~[?:?]
	at net.citizensnpcs.api.command.CommandManager.executeSafe(CommandManager.java:183) ~[?:?]
	at net.citizensnpcs.Citizens.onCommand(Citizens.java:238) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[patched_1.12.2.jar:git-Paper-1613]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:152) ~[patched_1.12.2.jar:git-Paper-1613]
	at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:685) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1478) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1283) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:14) ~[patched_1.12.2.jar:git-Paper-1613]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_211]
	at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_211]
	at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:850) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:423) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:774) ~[patched_1.12.2.jar:git-Paper-1613]
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:666) ~[patched_1.12.2.jar:git-Paper-1613]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]
Caused by: java.lang.NullPointerException
	at me.mrdarkness462.islandborder.compatibility.SupportASkyBlock.remove(SupportASkyBlock.java:28) ~[?:?]
	at me.mrdarkness462.islandborder.listeners.Events.onWorldChange(Events.java:12) ~[?:?]
	at com.destroystokyo.paper.event.executor.MethodHandleEventExecutor.execute(MethodHandleEventExecutor.java:35) ~[patched_1.12.2.jar:git-Paper-1613]
	...