[12:55:02] [Server thread/INFO]: pandapipino issued server command: /class army
[12:55:02] [Server thread/INFO]: [ClassRanks] ADD PermName spy or user CraftPlayer{name=pandapipino}
[12:55:02] [Server thread/INFO]: [ClassRanks] Vault Global PermName spy: user CraftPlayer{name=pandapipino}
[12:55:02] [Server thread/INFO]: [ClassRanks] pandapipino now is a Spy I
[12:55:06] [Server thread/INFO]: pandapipino issued server command: /class get
[12:55:08] [Server thread/INFO]: pandapipino issued server command: /rankup
[12:55:08] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'rankup' in plugin ClassRanks v0.7.
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at org.bukkit.craftbukkit.v1_9_R1.CraftServer.dispatchCommand(CraftServer.java:645) ~[spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.PlayerConnection.handleCommand(PlayerConnection.java:1350) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1185) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_71]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_71]
	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_71]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
	at net.slipcor.classranks.managers.ConfigManager.getExpCost(ConfigManager.java:114) ~[?:?]
	at net.slipcor.classranks.commands.AbstractClassCommand.checkExp(AbstractClassCommand.java:551) ~[?:?]
	at net.slipcor.classranks.commands.AbstractClassCommand.rankUp(AbstractClassCommand.java:729) ~[?:?]
	at net.slipcor.classranks.commands.RankupCommand.parseCommand(RankupCommand.java:169) ~[?:?]
	at net.slipcor.classranks.commands.RankupCommand.onCommand(RankupCommand.java:51) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot-1.9.jar:git-Spigot-104c8c8-e43b278]
	... 15 more
[12:55:09] [Async Chat Thread - #0/INFO]: <@Admins [.] pandapipino> est