Solved [NMS] Custom Mob Spawning/Moving to location

Hi, as most of what the title says. I need help with spawning and moving a custom mob to a specific location. I have tried many other tutorials, even went trying it my self to see if I could get it. If I somehow find it out myself, I will post my recent code for all classes on here for anyone else who needed help on this. This is only a testing project, it might look like a real plugin but it's just a hobby that I do. As most people request code I will post most of my classes here that require help such as:

EDIT 2: Code has been completely updated to the code I have now with CitizensAPI 1.12.2 and Bukkit 1.12.2.

My Command for spawning NPC:

SpawnNew.java (open) SpawnNew.java (close)

Code:

package me.hype.testing.ep.commands;

import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;

import me.hype.testing.ep.Core;
import net.citizensnpcs.api.CitizensAPI;
import net.citizensnpcs.api.npc.NPC;

public class SpawnNew implements CommandExecutor {

    Core plugin = Core.getInstance();
    String prefix = "";
    public static NPC npc;

    public boolean onCommand(CommandSender sender, Command cmd, String l, String[] a) {
        if (!(sender instanceof Player)) {
            sender.sendMessage(ChatColor.RED + "You must be a 'Player' to run this command!");
            return true;
        }
        Player p = (Player) sender;
        int length = a.length;
        if (cmd.getName().equalsIgnoreCase("newnpc")) {
            if (!p.hasPermission("perm.new")) {
                p.sendMessage(format(prefix + "&cYou don't have permission to run this command."));
                return true;
            }
            if (length == 0) {
                npc = CitizensAPI.getNPCRegistry().createNPC(EntityType.PLAYER, "&2Zombie");
                npc.spawn(p.getLocation());
                p.sendMessage(format(prefix+"&aSpawned NPC."));
                return true;
            } else if (length >= 1) {
                p.sendMessage(format(prefix+"blah"));
                return true;
            }
        }
        return true;
    }

    public String format(String s) {
        return ChatColor.translateAlternateColorCodes('&', s);
    }
}

My Command for moving the NPC (Requires the NPC to be spawned look at command before):

MoveTo.java (open) MoveTo.java (close)

Code:

package me.hype.testing.ep.commands;

import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;

import me.hype.testing.ep.Core;

public class MoveTo implements CommandExecutor {
  
    Core plugin = Core.getInstance();
    SpawnNew sn = new SpawnNew();
    String prefix = "";

    public boolean onCommand(CommandSender sender, Command cmd, String l, String[] a) {
        if (!(sender instanceof Player)) {
            sender.sendMessage(ChatColor.RED + "You must be a 'Player' to run this command!");
            return true;
        }
        Player p = (Player) sender;
        int length = a.length;
        if (cmd.getName().equalsIgnoreCase("epmoveto")) {
            if (!p.hasPermission("perm.move")) {
                p.sendMessage(format(prefix + "&cYou don't have permission to run this command."));
                return true;
            }
            if (length == 0) {
                p.sendMessage(format("blah"));
                return true;
            } else if (length == 1) {
                p.sendMessage(format("blah"));
                return true;
            } else if (length == 2) {
                p.sendMessage(format("blah"));
                return true;
            } else if (length == 3) {
                double x = Double.parseDouble(a[0]);
                double y = Double.parseDouble(a[1]);
                double z = Double.parseDouble(a[2]);
                World w = p.getLocation().getWorld();
                Location loc = new Location(w,x,y,z);
                SpawnNew.npc.getNavigator().setTarget(loc);
                p.sendMessage(format("Moving to location..."));
                return true;
            } else if (length >= 4) {
                p.sendMessage(format("blah"));
                return true;
            }
        }
        return true;
    }

    public String format(String s) {
        return ChatColor.translateAlternateColorCodes('&', s);
    }
}

EDIT:
If you are looking at this thread I have now currently solved my problem with CitizensAPI. I didn't want to use a API but from the looks of it that will happen until I find my own way. I'll post my CitizensAPI code here for further reference for anyone else.

 

If anyone checks this thread, I have changed most of my code. If the problem persists I'll update this code.