Warp plugin help

Everything loads in the server fine but when I type the command it says an internal error occurred.

Error in console:

Code:

[08:36:59 INFO]: FBS1imJim issued server command: /setarena
[08:37:02 INFO]: FBS1imJim issued server command: /setarena Test
[08:37:02 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'setarena' in plugin FFAArenas v2.0
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_73]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_73]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_73]
Caused by: java.lang.NullPointerException
        at FB.Arenas.Arenas.onCommand(Arenas.java:29) ~[?:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
        ... 15 more

Plugin Code:

Code:

package FB.Arenas;

import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class Arenas extends JavaPlugin {

SettingsManagers settings = SettingsManagers.getInstance();

@Overridepublic boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

Player p = (Player) sender;
if (cmd.getName().equalsIgnoreCase("setarena")) {
if (args.length == 0) {
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.RED + "Try /setarena <name> to create an arena!");
return true;
}
settings.getData().set("warps." + args[0] + ".world", p.getLocation().getWorld().getName());
settings.getData().set("warps." + args[0] + ".X", p.getLocation().getX());
settings.getData().set("warps." + args[0] + ".Y", p.getLocation().getY());
settings.getData().set("warps." + args[0] + ".Z", p.getLocation().getZ());
settings.saveData();
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.GREEN + "Arena has been created!");
}

if (cmd.getName().equalsIgnoreCase("ffajoin")) {
if (args.length == 0) {
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.RED + "Try /ffajoin <arena name> to join an arena!");
return true;
}
if (settings.getData().getConfigurationSection("warps." + args[0]) == null) {
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.DARK_RED + "ERROR:" + ChatColor.RED + "Arena doesn't exist!");
return true;
}
World w = Bukkit.getServer().getWorld(settings.getData().getString("warps." + args[0] + ".world"));
double x = settings.getData().getDouble("warps." + args[0] + ".x");
double y = settings.getData().getDouble("warps." + args[0] + ".y");
double z = settings.getData().getDouble("warps." + args[0] + ".z");
p.teleport(new Location(w, x, y, z));
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.GREEN + "You have joined the arena!");
}

if (cmd.getName().equalsIgnoreCase("delarena")) {
if (args.length == 0) {
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.RED + "Try /delarena <name> to delete an arena!");
return true;
}
if (settings.getData().getConfigurationSection("warps." + args[0]) == null) {
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.DARK_RED + "ERROR:" + ChatColor.RED + "Arena doesn't exist!");
return true;
}
settings.getData().set("warps." + args[0], null);
settings.saveData();
p.sendMessage(ChatColor.BLACK + "[" + ChatColor.GOLD + "FFA" + ChatColor.BLACK + "]" + ChatColor.GREEN + "Arena has been deleted!");
}
return true;
}
}

Plz help I don't know what is wrong.

 

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