Solved I don't understand this crash

ok so , I am creating a server and creating my own plugins . but I had a crash report on the last one when lauching the server.
here is the crash report:

Code:

[17:44:42 ERROR]: Error occurred while enabling snowduel v1.0 (Is it up to date?)
java.lang.NullPointerException: null
        at fr.snowdingerr.snowduel.mainclass.StringToLoc(mainclass.java:165) ~[?:?]
        at fr.snowdingerr.snowduel.mainclass.onEnable(mainclass.java:63) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) ~[craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:339) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:409) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:423) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:349) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.reload(CraftServer.java:786) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.Bukkit.reload(Bukkit.java:613) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:28) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:684) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchServerCommand(CraftServer.java:670) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at net.minecraft.server.v1_13_R2.DedicatedServer.handleCommandQueue(DedicatedServer.java:423) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:383) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:792) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:695) [craftbukkit-1.13.2.jar:git-Bukkit-84f3da3]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]

If anyone can help me solving this crash and fixing my plugin I would be very happy ^u^ thanks for reading

 

@cdnyassuo34
Can I see your plugin.yml,

what version of Minecraft is your server running, and what version is your plugin using.

 

here is my plugin.yml

Code:

name: snowduel
version: 1.0
author: snowdingerr
main: fr.snowdingerr.snowduel.mainclass

commands:
  duel:
    permission: snowdingerr.duel
    description: permet de lancer une action de duel.
    aliases: [d,dueling]

my server is on 1.13.2
and my plugins are running with craftbukkit 1.13.2

^^ that's why I don't really understand my crash report

 

@cdnyassuo34
Can I see your main class?

Add a description to your plugin.yml

 

here is my mainclass ^^
hope you can see the problem ^^

Code:

package fr.snowdingerr.snowduel;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.bukkit.Bukkit;
import org.bukkit.Location;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.configuration.ConfigurationSection;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

import fr.snowdingerr.snowduel.arenas.Arena;
import fr.snowdingerr.snowduel.arenas.ArenaListerners;
import fr.snowdingerr.snowduel.arenas.ArenaManager;

public class mainclass extends JavaPlugin {
   
    private Map<Player, Player> players = new HashMap<>();
    private ArenaManager am = new ArenaManager();
    private File arenaFile;
    private YamlConfiguration arenaConfig;
   
    @Override
    public void onEnable() {
        System.out.println("[SnowDuel] Le plugin est allumé. /duel help pour afficher les commandes disponibles");
        getCommand("duel").setExecutor(this);
        getServer().getPluginManager().registerEvents(new ArenaListerners(this), this);
       
        //création du fichier arena.yml si tu regarde le code évite de toucher à ça ^u^
        if(!getDataFolder().exists()) 
        {
            getDataFolder().mkdir();
        }
       
        arenaFile = new File(getDataFolder() + File.separator + "arena.yml");
       
        if(!arenaFile.exists())
        {
            try {
                arenaFile.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
       
        //chargement du dossier config
       
        arenaConfig = YamlConfiguration.loadConfiguration(arenaFile);
       
        //charger les arènes
       
        ConfigurationSection arenaSection = arenaConfig.getConfigurationSection("arenas");
       
        for(String string : arenaSection.getKeys(false))
        {
            String loc1 = arenaSection.getString(string + ".loc1");
            String loc2 = arenaSection.getString(string + ".loc2");
            Arena arena = new Arena(StringToLoc(loc1), StringToLoc(loc2));
            am.addArena(arena);
        }
       
    }
    @Override
    public void onDisable() {
        System.out.println("[SnowDuel] le plugin est éteind.");
    }
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
       
        if(cmd.getName().equalsIgnoreCase("duel") && sender instanceof Player) 
        {
            Player player = (Player) sender;
           
            if(args.length == 0) {
                player.sendMessage("§b/duel help pour afficher le menu d'aide");
                return true;
            }
            else if(args.length == 1)
            {
               
                String targetName = args[0];
               
                if(args[0].equalsIgnoreCase("help")) 
                {
                    player.sendMessage("§6------------------ §bCommands§6 1/1 ------------------");
                    player.sendMessage("§6/duel help : affiche le menu d'aide");
                    player.sendMessage("§6/duel <NomDuJoueur> : permet d'envoyer une demande de duel");
                    player.sendMessage("§6/duel accept : permet d'accepter un duel");
                    player.sendMessage("§6/duel deny : permet de refuser un duel");
                    player.sendMessage("§6/duel rank : affiche votre rang de duel");
                    player.sendMessage("§6/duel rank <NomDuJoueur> : affiche le rang du joueur");
                    return true;
                }
                else if(args[0].equalsIgnoreCase("rank")) 
                {
                    player.sendMessage("§bvous êtes: §c");
                    return true;
                }
                else if(args[0].equalsIgnoreCase("accept")) 
                {
                    if(players.containsKey(player)) {
                        player.sendMessage("§bVous avez accepté le duel ! §8lancement du duel...");
                       
                        Player asker = players.get(player);
                        asker.sendMessage("§ble combattant §a" + player +"§b a accepté votre demande de duel ! §8lancement du duel...");
                       
                        //la téléportation :o
                        am.joinArena(player , asker);
                       
                        players.remove(player);
                    }
                    return true;
                }
                else if(args[0].equalsIgnoreCase("deny")) 
                {
                    if(players.containsKey(player)) 
                    {
                        player.sendMessage("§cvous venez de refuser le duel !");
                        players.get(player).sendMessage("§cLe joueur §a" + player.getName() + "§c a refusé votre demande de duel !");
                       
                        players.remove(player);
                    }
                    return  true;
                }
                else if(Bukkit.getPlayer(targetName) != null) 
                {
                    Player target = Bukkit.getPlayer(targetName);
                   
                    if(players.containsKey(target)) 
                    {
                        player.sendMessage("§bLe joueur que vous avez demandé en duel a déjà une demande en cours");
                        return true;
                    }
                   
                    players.put(target, player);
                    player.sendMessage("§bVous venez de demander en duel §a" + target.getName());
                    target.sendMessage("§ble combattant §a" + player.getName() + "§b vous a demandé en duel !");
                    target.sendMessage("§bfaites §e/duel accept §b pour accepter et §e/duel deny §bpour");
                    target.sendMessage("§brefuser le duel");
                    return true;
                   
                   
                }
               
           
            }
        }
           
        return false;
    }
    public ArenaManager getArenaManager() {
        return am;
    }
    public void setAm(ArenaManager am) {
        this.am = am;
    }
   
    public Location StringToLoc(String string)
    {
        String[] parsedLoc = string.split(",");
        double x = Double.valueOf(parsedLoc[0]);
        double y = Double.valueOf(parsedLoc[1]);
        double z = Double.valueOf(parsedLoc[2]);
       
        return new Location(Bukkit.getWorld("duels"), x, y, z);
    }
   
    public String LocToString(Location loc)
    {
        return loc.getBlockX() + "," + loc.getY() + "," +loc.getZ();
    }

}

 

@cdnyassuo34 It would seem 'loc1' or 'loc2' is null when you do 'Arena arena = new Arena(StringToLoc(loc1), StringToLoc(loc2));'

 

then I am confused :/ the loc1 and loc2 have a value in the arena.yml
maybe the file don't work :/

 

@cdnyassuo34 Could you show your "arena.yml" file?

 

Code:

arenas:
  arena1:
    loc1:10,5,10
    loc2:-10,5,-10
  arena2:
    loc1:10,5,10
    loc2:-10,5,-10
  arena3:
    loc1:10,5,10
    loc2:-10,5,-10
  arena4:
    loc1:10,5,10
    loc2:-10,5,-10
  arena5:
    loc1:10,5,10
    loc2:-10,5,-10

 

@cdnyassuo34 this is what your yml is being interpreted as, and it is the reason why your variables are null.

Code:

arenas:
  arena1: "loc1:10,5,10 loc2:-10,5,-10"
  arena2: "loc1:10,5,10 loc2:-10,5,-10"
  arena3: "loc1:10,5,10 loc2:-10,5,-10"
  arena4: "loc1:10,5,10 loc2:-10,5,-10"
  arena5: "loc1:10,5,10 loc2:-10,5,-10"

 

@cdnyassuo34 Try adding a space after the colon.
From this:

Code:

loc1:10,5,10

To this:

Code:

loc1: 10,5,10

 

adding space after loc1: was the solution ^^ thanks ^^
so all the problems were coming from the arena.yml :/
thank you so much for helping me ^^