java.lang.NullPointerException: null
        at com.sk89q.worldedit.bukkit.BukkitAdapter.asBukkitWorld(BukkitAdapter.java:51) ~[worldedit-bukkit-6.1.9.jar:?]
        at com.sk89q.worldedit.bukkit.WorldEditPlugin.getSelection(WorldEditPlugin.java:418) ~[worldedit-bukkit-6.1.9.jar:?]
        at com.sk89q.worldguard.bukkit.commands.region.RegionCommandsBase.checkSelection(RegionCommandsBase.java:217) ~[worldguard-bukkit-6.2.2.jar:?]
        at com.sk89q.worldguard.bukkit.commands.region.RegionCommandsBase.checkRegionFromSelection(RegionCommandsBase.java:274) ~[worldguard-bukkit-6.2.2.jar:?]
        at com.sk89q.worldguard.bukkit.commands.region.RegionCommands.define(RegionCommands.java:126) ~[worldguard-bukkit-6.2.2.jar:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_282]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_282]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_282]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_282]
        at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:528) ~[CommandsManager.class:?]
        at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:516) ~[CommandsManager.class:?]
        at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:471) ~[CommandsManager.class:?]
        at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:409) ~[CommandsManager.class:?]
        at com.sk89q.worldguard.bukkit.WorldGuardPlugin.onCommand(WorldGuardPlugin.java:285) ~[worldguard-bukkit-6.2.2.jar:?]
        at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:54) ~[worldedit-bukkit-6.1.9.jar:?]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:153) ~[SimpleCommandMap.class:1.12.2-b43297ee]
        at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:689) ~[CraftServer.class:1.12.2-b43297ee]
        at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:1604) ~[pa.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:1452) ~[pa.class:?]
        at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:50) ~[la.class:?]
        at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:11) ~[la.class:?]
        at net.minecraft.network.PacketThreadUtil.lambda$checkThreadAndEnqueue$0(PacketThreadUtil.java:14) ~[hv.class:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_282]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_282]
        at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:861) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:461) [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:800) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:672) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282]