Error CS1061 I can't find a solution! [C#]

Hi, I’m new to unity and i got my script but it’s not working and i can’t find the reason can someone help me?

This is my script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class GameEnd : MonoBehaviour {
	public GameObject CanvasIG;
	public GameObject CanvasEnd;
	// Use this for initialization
	void Start () {
	// Update is called once per frame
	void Update () {
	void OnTriggerEnter(Collider EndPad)

		if (EndPad.gameObject.tag == "Player") {

			CanvasIG.GameObject.SetActive (false);
			CanvasEnd.GameObject.SetActive (true);

		} else {


That code should make a canvas appear and anotherone disappear when the player is colliding with an object.
Thank you in advanced.

On line 22 and 23 you try to use the member GameObject on GameObject references. This member doesn’t exist on GameObject. At both lines change.GameObject.SetActive to .SetActive.