Need some help with my script (getting an error in debug console)

[Venom7 0]

I'm making a pest control script and decided to give nodes a shot. I understand the concept behind them and have knowledge in coding since I am a Computer Science student. However, I am getting the following error when I start the script. I have made about 5 other scripts already but those were only using conditional logic since I was lazy and it served my purpose at the time lol.

[ERROR]01:07:30: Error occurred while trying to start script:
	java.lang.InstantiationException
	at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at java.lang.Class.newInstance(Unknown Source)
	at org.dreambot.api.script.ScriptManager.start(ScriptManager.java:99)
	at org.dreambot.1.2.3.0.4.0(4.java:255)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

I will post the code for the script as well. Currently, it only has walking to the intermediate boat since I test as i code. 

Main:

public abstract class PestControl extends AbstractScript {
    private Node[] nodes;

    public final Area WAITING_AREA = new Area(2657,2638,2638,2655,0);
    public final Tile INTERMEDIATE_BOAT = new Tile(2640,2644,0);

    @Override
    public void onStart() {
        PassableObstacle gangplank = new PassableObstacle("Gangplank", "Cross", null, null, null);
        getWalking().getAStarPathFinder().addObstacle(gangplank);

        nodes = new Node[]{
                new Start(this)
        };
    }

    @Override
    public int onLoop() {
        for(Node node : nodes){
            if(node.validate()){
                node.execute();
                break;
            }
        }
        log("No node execcuted.");
        return Calculations.random(958,1012);
    }
}

Walking Node:

public class Start extends Node {
    public Start(PestControl main) {
        super(main);
    }

    @Override
    public boolean validate() {
        return c.WAITING_AREA.contains(c.getLocalPlayer()) && !c.getLocalPlayer().getTile().equals(c.INTERMEDIATE_BOAT);
    }

    @Override
    public void execute() {
            c.getWalking().walk(c.INTERMEDIATE_BOAT);
    }
}

Node Class:

public abstract class Node {
    protected final PestControl c;

    public Node(PestControl main){
        this.c = main;
    }

    public abstract boolean validate();
    public abstract void execute();
}

Any help would be appreciated.

[Nuclear Nezz 2027]

Your pest control class is abstract, make it not abstract.