Vault NullPointerException

[Clems02]

Hi,
I have a NullPointerException in the console why I call a method in a class with eco.withdraw... (vault)
I don't know why because in other class like my listener it's work...

Spoiler: Console Error

[12:54:30 ERROR]: Could not pass event InventoryClickEvent to PickaxeTestYML v1.0
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-dcd1643-e60fc34]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1891) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:33) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PacketPlayInWindowClick.a(SourceFile:10) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_211]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_211]
        at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:748) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot.jar:git-Spigot-dcd1643-e60fc34]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]
Caused by: java.lang.NullPointerException
        at fr.clems.pickaxe.Anvil.anvilUSE(Anvil.java:49) ~[?:?]
        at fr.clems.pickaxe.EventListener.onClickInventory(EventListener.java:154) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_211]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_211]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_211]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_211]
        at org.bukkit

Spoiler: Main class

public class Main extends JavaPlugin {
   
    public static Economy economy = null;
   
    private Book book = new Book(this);
    private Gui gui = new Gui(this);
    private Anvil anvil = new Anvil(this);
       
    @Override
    public void onEnable() {
        setupEconomy();
       
        getConfig().options().copyDefaults(true);
        saveDefaultConfig();
       
        getServer().getPluginManager().registerEvents(new EventListener(this), this);
       
        getCommand("efficiency").setExecutor(new Commands(this));
        getCommand("fortune").setExecutor(new Commands(this));
        getCommand("unbreaking").setExecutor(new Commands(this));
       
        getCommand("set").setExecutor(new CommandsAdmin());
    }
   
    public void onDisable() {       
    }
   
    private boolean setupEconomy() {
        RegisteredServiceProvider<Economy> economyProvider = getServer().getServicesManager().getRegistration(net.milkbowl.vault.economy.Economy.class);
        if (economyProvider != null) {
            economy = economyProvider.getProvider();
        }
        return (economy != null);
    }


}

Spoiler: Anvil Class (error with method AnvilGUI)

    private FileConfiguration config;
    private Main main;
    private Economy eco;
   
    public Anvil(Main main) {
        this.main = main;
        this.config = main.getConfig();
        this.eco = Main.economy;
    }


    public void anvilUSE(Player p) {
        p.getInventory().getItem(0).setDurability((short) 0);
        eco.withdrawPlayer(p, 1000);
        System.out.println("test");
    }

Spoiler: Listener - call method AnvilGUI

            if(nameItem.equalsIgnoreCase("§aRepair")) {
                new Anvil().anvilUSE(p);
            }

Can you help me please ? Thank's a lot

 

[Clems02]

It's

        eco.withdrawPlayer(p, 1000);

 

[TehSteel]

It's

        eco.withdrawPlayer(p, 1000);

If the player dosent have 1000?

 

[Clems02]

I know I need to do it, I'll do it after. But I already want to withdraw 1000 before making the loop.

And when I try the plugin, I have 1000

 

[Clems02]

Don't working. The problem is the vault plugin.
When I use "eco." in this class, it's make me an error.

 

[BidoofIsBae]

It might be because the economy did not load properly, you call the boolean method "setupEconomy" yet you do not check it's value, if you try to call a method on a null object it will cause a NullPointerException, so likely the economy did not start up well, and since you didn't check the return value of setupEconomy you have no way of knowing.