25.02 23:48:08 [Server] INFO butterontoast7 issued server command: /ma j Frosbite_Arena_3
25.02 23:48:08 [Server] ERROR null
25.02 23:48:08 [Server] INFO org.bukkit.command.CommandException: Unhandled exception executing command 'ma' in plugin MobArena v0.97.1
25.02 23:48:08 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:47) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:146) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:666) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1189) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1001) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_242]
25.02 23:48:08 [Server] INFO at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_242]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:774) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
25.02 23:48:08 [Server] INFO Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
25.02 23:48:08 [Server] INFO at java.lang.String.substring(String.java:1967) ~[?:1.8.0_242]
25.02 23:48:08 [Server] INFO at com.garbagemule.MobArena.commands.Commands.lambda$getArenaToJoinOrSpec$1(Commands.java:54) ~[?:?]
25.02 23:48:08 [Server] INFO at java.util.ArrayList.removeIf(ArrayList.java:1413) ~[?:1.8.0_242]
25.02 23:48:08 [Server] INFO at com.garbagemule.MobArena.commands.Commands.getArenaToJoinOrSpec(Commands.java:53) ~[?:?]
25.02 23:48:08 [Server] INFO at com.garbagemule.MobArena.commands.user.JoinCommand.execute(JoinCommand.java:26) ~[?:?]
25.02 23:48:08 [Server] INFO at com.garbagemule.MobArena.commands.CommandHandler.onCommand(CommandHandler.java:67) ~[?:?]
25.02 23:48:08 [Server] INFO at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-4c7641d1]
25.02 23:48:08 [Server] INFO ... 15 more