[11:09:49] [Server thread/INFO]: teunvdz2004 issued server command: /ama leave
[11:09:49] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'ama' in plugin AdvancedMobArena v2.1.2c-beta3
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[custom.jar:git-Spigot-d4f98a3-4448a7e]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[custom.jar:git-Spigot-d4f98a3-4448a7e]
	at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:650) ~[custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1344) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1179) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:45) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(PacketPlayInChat.java:1) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_121]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_121]
	at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:747) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [custom.jar:git-Spigot-d4f98a3-4448a7e]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
Caused by: java.lang.NullPointerException
	at ru.Capitalism.AMA.Arena.Game.leave(Game.java:362) ~[?:?]
	at ru.Capitalism.AMA.Main.onCommand(Main.java:1000) ~[?:?]
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[custom.jar:git-Spigot-d4f98a3-4448a7e]
	... 15 more