Solved Listeners won't work

The classes aren't going off. I think its some simple mistake but i can't catch it.
Main class

Code:

package me.episolon.net;
 
import me.episolon.net.Inventory.Ability;
import me.episolon.net.Inventory.Ability2;
import me.episolon.net.Inventory.Invhandler;
import me.episolon.net.cmds.Customkit;
import me.episolon.net.kl.Boxer;
import me.episolon.net.kl.Creeper;
import me.episolon.net.kl.Ender;
import me.episolon.net.kl.Knockback;
import me.episolon.net.kl.Nofall;
import me.episolon.net.kl.Stomper;
import me.episolon.net.kl.Viper;
import me.episolon.net.kl.Wither;
import me.episolon.net.util.Gameplay;
import org.bukkit.event.Listener;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Main extends JavaPlugin implements Listener {
 
    private Logger log = Logger.getLogger("Minecraft");
 
    public void onEnable(){
          PluginManager pm = getServer().getPluginManager();
 
        log.info("[eCustomKits] has been enabled!");
   
            pm.registerEvents(this, this);
 
            pm.registerEvents(new Invhandler(), this);
            pm.registerEvents(new Boxer(), this);
            pm.registerEvents(new Wither(), this);
            pm.registerEvents(new Ender(), this);
            pm.registerEvents(new Viper(), this);
            pm.registerEvents(new Stomper(), this);
            pm.registerEvents(new Creeper(), this);
            pm.registerEvents(new Nofall(), this);
            pm.registerEvents(new Knockback(), this);
 
       
 
        getCommand("customkit").setExecutor(new Customkit());   
    }
}

All the classes in here don't work except the command here is an example of one of the classes. I tried adding some debugging to see why it wouldn't go off.

Code:

package me.episolon.net.kl;
 
 
 
import me.episolon.net.util.Lists;
 
 
 
import org.bukkit.Bukkit;
 
import org.bukkit.entity.Entity;
 
import org.bukkit.entity.Player;
 
import org.bukkit.event.EventHandler;
 
import org.bukkit.event.Listener;
 
import org.bukkit.event.entity.EntityDamageByEntityEvent;
 
import org.bukkit.event.entity.EntityDamageEvent.DamageCause;
 
 
 
public class Nofall implements Listener {
 
 
 
    @EventHandler
 
    public void nofall(EntityDamageByEntityEvent event) {
 
        if (event.getCause() == DamageCause.FALL){
 
            Bukkit.broadcastMessage("Fell");
 
        Entity def = event.getEntity();
 
        if (def instanceof Player) {
 
            Player defend = (Player)def;
 
        if (Lists.nofallList.contains(defend.getName()) == true){
 
            Bukkit.broadcastMessage("In nofall list and fell");
 
      event.setCancelled(true);
 
                    }
 
                }
 
            }
 
      }
 
}

 

Try to use EntityDamageEvent not EntityDamageByEntityEvent, because Fall isn't entity.