[00:42:10] [Server thread/INFO]: Kichiro issued server command: /tiers get common 10 10
[00:42:10] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing 'tiers get common 10 10' in su.nightexpress.quantumrpg.cmds.CommandRegister(tiers)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:148) ~[spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:648) ~[spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.PlayerConnection.handleCommand(PlayerConnection.java:1397) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1232) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_201]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_201]
	at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot.jar:git-Spigot-2cf50f0-2b93d83]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
Caused by: java.lang.NullPointerException
	at su.nightexpress.quantumrpg.modules.cmds.MExecutor.onCommand(MExecutor.java:82) ~[?:?]
	at su.nightexpress.quantumrpg.cmds.CommandRegister.execute(CommandRegister.java:42) ~[?:?]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot.jar:git-Spigot-2cf50f0-2b93d83]
	... 14 more