Command error

[Amiroslo]

Hello, I bought the EWG, I was using the /ewg edit (world) and I got this error

[07:41:58 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'ewg' in plugin EpicWorldGenerator v8.0.0-SNAPSHOT
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:650) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1354) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1189) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_144]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_144]
        at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:747) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_144]
Caused by: java.lang.NullPointerException
        at minelazz.IIIiIiiiii.getEpicWorld(fn:47) ~[?:?]
        at com.minelazz.epicworldgenerator.iIIIIIIiIi.f(me:50) ~[?:?]
        at com.minelazz.epicworldgenerator.iIIIIIIiIi.onCommand(me:336) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
        ... 15 more