[21:49:55 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'chub' in plugin cHub v2.0.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[Spigot.jar:git-Spigot-550ebac-7019900]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[Spigot.jar:git-Spigot-550ebac-7019900]
        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646) ~[Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerConnection.java:1115) [Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:950) [Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:26) [Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:53) [Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [Spigot.jar:git-Spigot-550ebac-7019900]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_241]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_241]
        at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [Spigot.jar:git-Spigot-550ebac-7019900]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [Spigot.jar:git-Spigot-550ebac-7019900]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_241]
Caused by: java.lang.NullPointerException
        at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:68) ~[Spigot.jar:git-Spigot-550ebac-7019900]
        at dev.notcacha.chub.commands.cHubCMD.onCommand(cHubCMD.java:98) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[Spigot.jar:git-Spigot-550ebac-7019900]
        ... 14 more