Code not working

[Mr.Roboto3335]

I'm having some trouble with my code. Everytime I try to upload it keeps on showing this:
[cRIO] FPGA Hardware GUID: 0xa14c11bde4bb64aef6a86fc52a294cd9
[cRIO] FPGA Software GUID: 0xa14c11bde4bb64aef6a86fc52a294cd9
[cRIO] java.lang.NullPointerException: Null motor provided
[cRIO] at edu.wpi.first.wpilibj.RobotDrive.<init>(RobotDrive .java:139)
[cRIO] at edu.wpi.first.wpilibj.templates.RobotTemplate.Robo tDriveInit(RobotTemplate.java:67)
[cRIO] at edu.wpi.first.wpilibj.templates.RobotTemplate.robo tInit(RobotTemplate.java:41)
[cRIO] at edu.wpi.first.wpilibj.IterativeRobot.startCompetit ion(IterativeRobot.java:72)
[cRIO] at edu.wpi.first.wpilibj.RobotBase.startApp(RobotBase .java:169)
[cRIO] in virtual method #10 of javax.microedition.midlet.MIDlet(bci=17)
[cRIO] at javax.microedition.midlet.MIDletTunnelImpl.callSta rtApp(64)
[cRIO] at com.sun.squawk.imp.MIDletMainWrapper.main(110)
[cRIO] in virtual method #95 of com.sun.squawk.Klass(bci=25)
[cRIO] at com.sun.squawk.Isolate.run(1506)
[cRIO] at java.lang.Thread.run(231)
[cRIO] in virtual method #47 of com.sun.squawk.VMThread(bci=42)
[cRIO] in static method #3 of com.sun.squawk.VM(bci=6)
[cRIO] WARNING: Robots don't quit!
[cRIO] ---> The startCompetition() method (or methods called by it) should have handled the exception above.


Code:

/*----------------------------------------------------------------------------*/
/* Copyright (c) FIRST 2008. All Rights Reserved.                             */
/* Open Source Software - may be modified and shared by FRC teams. The code   */
/* must be accompanied by the FIRST BSD license file in the root directory of */
/* the project.                                                               */
/*----------------------------------------------------------------------------*/

package edu.wpi.first.wpilibj.templates;


import edu.wpi.first.wpilibj.DriverStationLCD;
import edu.wpi.first.wpilibj.IterativeRobot;
import edu.wpi.first.wpilibj.Joystick;
import edu.wpi.first.wpilibj.RobotDrive;
import edu.wpi.first.wpilibj.Servo;
import edu.wpi.first.wpilibj.SpeedController;
import edu.wpi.first.wpilibj.Talon;
import edu.wpi.first.wpilibj.Victor;
import edu.wpi.first.wpilibj.camera.AxisCamera;


public class RobotTemplate extends IterativeRobot 
{   

    private Joystick leftStick;
    private Joystick rightStick;
    private Joystick shootStick;
    private SpeedController ShooterFront;
    private SpeedController ShooterBack;        
    private SpeedController Left;
    private SpeedController Right;
    private RobotDrive drive;
    private AxisCamera camera;
    private Servo servo;
    private DriverStationLCD lcd = DriverStationLCD.getInstance();
    
    public void robotInit() 
    {
        
      JoystickInit();
      RobotDriveInit();
      TalonInit();
      ServoInit();
      VictorInit();
      
      
      getWatchdog().setExpiration(0.1); 
        lcd.println(DriverStationLCD.Line.kUser2, 1, "Enabled!");
        lcd.updateLCD();
    }
    
    public void VictorInit()
    {
       ShooterFront = new Victor(4);
       ShooterBack = new Victor(3);
    }
    
    public void JoystickInit()
    {
        leftStick = new Joystick(1);
        rightStick = new Joystick(2); 
        shootStick = new Joystick(3);
    } 
    
    public void RobotDriveInit()
    {
        drive = new RobotDrive(Left, Right);
    }
        
    public void TalonInit()
    {
        Left = new Talon(1);
        Right = new Talon(2);
    }
    
    public void ServoInit()
    {
        servo = new Servo(7);
    }
    
    public void autonomousInit()
    {
        getWatchdog().setEnabled(true);
        lcd.println(DriverStationLCD.Line.kUser2, 1, "Autonomous!");
        lcd.updateLCD();
    }
    
    public void autonomousPeriodic()
    {
        
    }

    public void teleopInit()
    {
        getWatchdog().setEnabled(true);
        lcd.println(DriverStationLCD.Line.kUser2, 1, "Teleop!");
        lcd.updateLCD();
    }
    long x = 1;
    public void teleopContinuous()
    {
        
    }
    
    public void teleopPeriodic() 
    {
         AxisCamera.getInstance().writeCompression(0);
         AxisCamera.getInstance().writeResolution(AxisCamera.ResolutionT.k320x240);
         AxisCamera.getInstance().writeBrightness(10);
         
         drive.tankDrive(-leftStick.getY(), -rightStick.getY());
         
         if(shootStick.getRawButton(1))
    {
             servo.setAngle(30);
    }
         
         else
    {
             servo.setAngle(0);
    }
         
         if(shootStick.getRawButton(6))
    {
             ShooterFront.set(100);
             ShooterBack.set(100);
    }
        else if(shootStick.getRawButton(7))
    {
             ShooterFront.set(0);
             ShooterBack.set(0);
    }
 }

    public void testPeriodic() 
    {

    }
}