Solved Could not pass event VotifierEvent to BitsecVotifier

Hi, I am trying to create a votifier plugin. and now I have followed a tutorial on how to make a config file to save the votes in. The only problem is that I get this error: Could not pass event VotifierEvent to BitsecVotifier

Code (Text):

org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:500) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:485) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at com.vexsoftware.votifier.net.VoteReceiver$1.run(VoteReceiver.java:182) [votifier-1.9.jar:?]
        at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftTask.run(CraftTask.java:71) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at org.bukkit.craftbukkit.v1_12_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:739) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:406) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:679) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:577) [spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_171]
Caused by: java.lang.NullPointerException
        at com.bitsec.Votifier.VoteEvent.onVotifierEvent(VoteEvent.java:33) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_171]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_171]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_171]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot-1.12.2.jar:git-Spigot-3d850ec-809c399]
        ... 11 more

This is my Main class: Votifier.java

Code (Java):

package com.bitsec.Votifier;

import org.bukkit.plugin.java.JavaPlugin;

import net.md_5.bungee.api.ChatColor;

public class Votifier extends JavaPlugin {
 
    private ConfigManager cfgm;
 
    public void onEnable() {
        loadConfigManager();
        getServer().getPluginManager().registerEvents(new VoteEvent(), this);
        getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[BitsecVotifier] has been enabled!");
    }
 
    public void loadConfigManager() {
        cfgm = new ConfigManager();  
        cfgm.setup();
    }
 
    public void onDisable() {
        cfgm.votescfg.addDefault("players", "player");
        cfgm.votescfg.options().copyDefaults(true);
        saveConfig();
        getServer().getConsoleSender().sendMessage(ChatColor.RED + "[BitsecVotifier] has been disabled!");
    }
 
}
 

and here is my event listener class: VoteEvent.java

Code (Java):

package com.bitsec.Votifier;

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;

import com.vexsoftware.votifier.model.Vote;
import com.vexsoftware.votifier.model.VotifierEvent;

import net.md_5.bungee.api.ChatColor;

public class VoteEvent implements Listener {
 
    private ConfigManager cfgm;
 
    @EventHandler(priority=EventPriority.NORMAL)
    public void onVotifierEvent(VotifierEvent event) {

        Vote v = event.getVote();
        Player p = Bukkit.getPlayer(v.getUsername());
     
        if (p == null) {
            Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[BitsecVotifier] " + v.getUsername() + ChatColor.RED + " [Offline]" + ChatColor.GREEN + " has voted on " + v.getServiceName());
            Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[BitsecVotifier] Redeem your offline votes using /redeemvotes");
            int offlinevotes = cfgm.getVotes().getInt("players." + v.getUsername() + ".offlinevotes");
            cfgm.getVotes().set("players." + v.getUsername() + ".offlinevotes", offlinevotes++);
        }else {
            Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[BitsecVotifier] " + v.getUsername() + " has voted on " + v.getServiceName());
            int votes = cfgm.getVotes().getInt("players." + v.getUsername() + ".votes");
            cfgm.getVotes().set("players.RamonRobben.votes", votes++);
        }
     
        cfgm.saveVotes();
     
    }
}
 

And the ConfigManager class just incase you need it:

Code (Java):

package com.bitsec.Votifier;

import java.io.File;

import org.bukkit.Bukkit;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;

import net.md_5.bungee.api.ChatColor;

public class ConfigManager {

    private Votifier plugin = Votifier.getPlugin(Votifier.class);
 
    //Files & File configs here
    public FileConfiguration votescfg;
    public File votesfile;
    //...........................
 
    public void setup() {
        //check if we have datafolder otherwise make one
        if (!plugin.getDataFolder().exists()) {
            plugin.getDataFolder().mkdir();
        }
     
        votesfile = new File(plugin.getDataFolder(), "voters.yml");
     
        if (!votesfile.exists()) {
            try {
                votesfile.createNewFile();
                Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "[BitsecVotifier] voters.yml file has been created");
            }catch(Exception e) {
                Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.RED + "[BitsecVotifier] Could not create voters.yml file");
            }
        }
     
        this.reloadVotes();  
    }
 
    public FileConfiguration getVotes() {
        return votescfg;
    }
 
    public void saveVotes() {
        try {
            votescfg.save(votesfile);
        } catch (Exception e) {
            Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.RED + "[BitsecVotifier] voters.yml coul not be saved");
        }
    }
 
    public void reloadVotes() {
        votescfg = YamlConfiguration.loadConfiguration(votesfile);
    }
 
}
 

I would like to know what I am doing wrong.

 

Thank you for your answer @JustDJplease
I now see the similarities with C# and Java and now I understand why and how this error occured and could be fixed.
I saw some of this code before but couldn't figure out how to implement it as when trying to give cfgm as parameter it wouldn't work.
That was because I didn't have the constructor that sets this.cfgm to the cfgm passed onto it.

Anyways thanks.