I can't find my mistakes

Hey there,
I made plugin, but something went wrong. I can't find my mistakes.
It says, that the onEnable - part is wrong and something in my Event - Class is wrong.
I hope someone can help me

onEnable part:

Code:

public static Plugin that;
    Logger log;

    public static String prefix = that.getConfig().getString("prefix");
    @Override
    public void onEnable() {
        Bukkit.getPluginManager().registerEvents(new Scrap.Jump.Events.Handler(), this);
        log = this.getLogger();
        log.info("Plugin TryJump was enabled!");
        that = this;
        new Stage(this);
        new Status(this);
        if (this.getConfig().getBoolean("reload") == true || this.getConfig() == null) {
            Status.data();
        }
        this.getCommand("tryjump").setExecutor(new CMDHandler());
        this.getCommand("tj").setExecutor(new CMDHandler());

Events part:

Code:

public class Handler implements Listener{
  
    public static HashMap<Player, Integer> stage = new HashMap<Player, Integer>();
    public static HashMap<String, Integer> ps = new HashMap<String, Integer>();
     @EventHandler
        public void JoinSign(SignChangeEvent e) {
        File data = new File("plugins/TryJump/Data/data.yml");
        YamlConfiguration dataconfig = null;
        dataconfig = YamlConfiguration.loadConfiguration(data);
        Player p = e.getPlayer();
        Location loc = e.getBlock().getLocation();
        if (e.getLine(0).toLowerCase().contains("[tj]")) {
            if (dataconfig.getString(e.getLine(1) + ".world").equalsIgnoreCase(p.getWorld().getName())){
                e.setLine(0, "- TryJump -");
                e.setLine(1, "[§aLobby§0]");
                if (e.getLine(2).equalsIgnoreCase("team")) {
                e.setLine(2, "Team");
                }else if (e.getLine(2).equalsIgnoreCase("solo")) {
                    e.setLine(2, "Solo");
                }else {
                    p.sendMessage(Scrap.Jump.Handler.prefix + "Please type into the 3rd line team or solo!");
                }
                e.setLine(3, e.getLine(1));
            }else {
                p.sendMessage(Scrap.Jump.Handler.prefix + "You forgot to set the Level or you set a wrong level!");
            }
        }
     }
     @EventHandler
     public void SignTeleport(PlayerInteractEvent e) {
     File data = new File("plugins/TryJump/Data/data.yml");
     YamlConfiguration dataconfig = null;
     dataconfig = YamlConfiguration.loadConfiguration(data);
     Sign s = (Sign) e.getClickedBlock().getState();
     if (e.getAction() == Action.RIGHT_CLICK_BLOCK || e.getAction() == Action.LEFT_CLICK_BLOCK) {
            if (e.getClickedBlock().getType() == Material.WALL_SIGN || e.getClickedBlock().getType() == Material.SIGN_POST) {
                if (e.getClickedBlock().getState() instanceof Sign) {
                    World w = Bukkit.getWorld(dataconfig.getString(s.getLine(0) + ".lobby.world"));
                    int x = dataconfig.getInt(s.getLine(0) + ".lobby.x");
                    int y = dataconfig.getInt(s.getLine(0) + ".lobby.y");
                    int z = dataconfig.getInt(s.getLine(0) + ".lobby.z");
                    int yaw = dataconfig.getInt(s.getLine(0) + ".lobby.yaw");
                    int pitch = dataconfig.getInt(s.getLine(0) + ".lobby.pitch");
                    Location loc = new Location(w, x, y, z, yaw, pitch);
                    e.getPlayer().teleport(loc);
                    ps.put(s.getLine(0) + "count", ps.get(s.getLine(0) + "count") + 1);
                    for (Player players : w.getPlayers()) {
                        players.sendMessage(Scrap.Jump.Handler.prefix + "§7" + e.getPlayer().getName() + " §7ist dem Spiel beigetreten!");
                    }
                    }
                }
            }
     }
}

Command part:
(The commands aren't work too.)

Code:

public ArrayList<String> levels = new ArrayList<String>();
  
    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

        File data = new File("plugins/TryJump/Data/data.yml");
        YamlConfiguration dataconfig = null;
        dataconfig = YamlConfiguration.loadConfiguration(data);
            Player p = (Player)sender;
            if (cmd.getName().equalsIgnoreCase("tj") || cmd.getName().equalsIgnoreCase("tryjump")) {
                if (args[0].length() == 0) {
                    p.sendMessage(Scrap.Jump.Handler.prefix + "§aHelp:");
                    p.sendMessage(Scrap.Jump.Handler.prefix + "§7/tj create <Level>");
                    p.sendMessage(Scrap.Jump.Handler.prefix + "§7/tj setspawn <Level>");
                    p.sendMessage(Scrap.Jump.Handler.prefix + "§7/tj setlobby <Level>");
                    p.sendMessage(Scrap.Jump.Handler.prefix + "§7/tj sethub <Level>");
                    p.sendMessage(Scrap.Jump.Handler.prefix + "§7/tj allow <Level>");
                }
                if (args[0].equalsIgnoreCase("create")) {
                    if (args[1].length() == 0) {
                        p.sendMessage(Scrap.Jump.Handler.prefix + "§7please use /tj create Level");
                    }else {
                        levels.add(args[1]);
                        dataconfig.set("levels", levels);
                        p.sendMessage(Scrap.Jump.Handler.prefix + "Arena " + args[1] + " created!");
                    }
                }
                if (args[0].equalsIgnoreCase("sethub")) {
                    if (args[1].length() == 0) {
                        p.sendMessage(Scrap.Jump.Handler.prefix + "§7please use /tj sethub Level");
                    }else {
                        if (dataconfig.getList("levels").contains(args[1])){
                            dataconfig.set(args[1] + ".hub.x", p.getLocation().getX());
                            dataconfig.set(args[1] + ".hub.y", p.getLocation().getY());
                            dataconfig.set(args[1] + ".hub.z", p.getLocation().getZ());
                            dataconfig.set(args[1] + ".hub.yaw", p.getLocation().getYaw());
                            dataconfig.set(args[1] + ".hub.pitch", p.getLocation().getPitch());
                            dataconfig.set(args[1] + ".hub.world", p.getLocation().getWorld().getName());
                            try {
                                dataconfig.save(data);
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                        }
                    }
                }
                if (args[0].equalsIgnoreCase("setlobby")) {
                    if (args[1].length() == 0) {
                        p.sendMessage(Scrap.Jump.Handler.prefix + "§7please use /tj setlobby Level");
                    }else {
                        if (dataconfig.getList("levels").contains(args[1])){
                        dataconfig.set(args[1] + ".lobby.x", p.getLocation().getX());
                        dataconfig.set(args[1] + ".lobby.y", p.getLocation().getY());
                        dataconfig.set(args[1] + ".lobby.z", p.getLocation().getZ());
                        dataconfig.set(args[1] + ".lobby.yaw", p.getLocation().getYaw());
                        dataconfig.set(args[1] + ".lobby.pitch", p.getLocation().getPitch());
                        dataconfig.set(args[1] + ".lobby.world", p.getLocation().getWorld().getName());
                        try {
                            dataconfig.save(data);
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                        }
                    }
                }        
                if (args[0].equalsIgnoreCase("setspawn")) {
                    if (args[1].length() == 0) {
                        p.sendMessage(Scrap.Jump.Handler.prefix + "§7please use /tj setspawn Level");
                    }else {
                        if (dataconfig.getList("levels").contains(args[1])){
                            dataconfig.set(args[1] + ".x", p.getLocation().getX());
                            dataconfig.set(args[1] + ".y", p.getLocation().getY());
                            dataconfig.set(args[1] + ".z", p.getLocation().getZ());
                            dataconfig.set(args[1] + ".yaw", p.getLocation().getYaw());
                            dataconfig.set(args[1] + ".pitch", p.getLocation().getPitch());
                            dataconfig.set(args[1] + ".world", p.getLocation().getWorld().getName());
                            try {
                                dataconfig.save(data);
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                            p.sendMessage(Scrap.Jump.Handler.prefix + "§7Arena " + args[1] + " §7created!");
                        }else {
                            p.sendMessage(Scrap.Jump.Handler.prefix + "§7The Arena " + args[1] + " §7doesn't exist!");
                        }
                    }
                }
                if (args[0].equalsIgnoreCase("allow")) {
                    if (args[1].length() == 0) {
                        p.sendMessage(Scrap.Jump.Handler.prefix + "§7please use /tj allow Level");
                    }else {
                    if (dataconfig.getList("levels").contains(args[1])){
                  
                    Scrap.Jump.Events.Handler.ps.put("count", 0);
                    Scrap.Jump.Methods.Status.allowed.put(args[1], true);
                    for (String b : Status.allowed.keySet()) {
                        dataconfig.set("allowed." + args[1], Status.allowed.get(b));
                    }
                    try {
                        dataconfig.save(data);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                    }
                }
            }
        }
        return false;
    }

EDIT:
I know, there are some mistakes with saving my dataconfig. Please ignore that.
The whole commands aren't registered!

 

Can you put console error in as well? I can't read everything and tell you what's wrong.

 

@Scrapnix
you are creating a separate class for each command. the arraylist 'levels' will not be the same for the two commands.
anyway, did you register the command name in the plugin.yml ?