Unity Networking Code not working

Hello Everyone I have a small code I am writing and when I try to get it in multiplayer it gives me an unreachable code error. I am new to networking with unity so i don’t know that much about scripting with it.

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

public class ConsoleGUI : NetworkBehaviour {
	public float Xsize = 1f;
	public float Ysize = 2f;
	public float Xposition = 1f;
	public float Yposition = 2f;

	public float Xsize1 = 1f;
	public float Ysize1 = 2f;
	public float Xposition1 = 1f;
	public float Yposition1 = 2f;

	public List<string> List = new List<string> ();

	public string String;
	public string InputString = "";
	// Use this for initialization
	void Start () {
		String = "Console Started Established Link";
	}
	
	// Update is called once per frame
	void Update () {
		if (isLocalPlayer){
			return;
			if (Input.GetKeyDown (KeyCode.Return)) {
				if (InputString == "ls") {
					String = String + "

(Directories)" + "
" + List [0] + "
" + List [1] + "
" + List [2] + "
" + List [3];
InputString = “”;
}

				if (InputString == "cd " + List [1]) {
					String = String + "

(Changed directory to desktop)";
InputString = “”;
}
if (InputString == “cd " + List [0]) {
String = String + "
(Changed directory to root)”;
InputString = “”;
}
if (InputString == “cd " + List [2]) {
String = String + "
(Changed directory to system)”;
InputString = “”;
}
if (InputString == "cd " + List [3]) {
String = String + "
(Can not open " + List [3] + “)”;
InputString = “”;
}

			}



		}
	}
	void OnGUI()
	{
		if (isLocalPlayer) {
			GUI.Box (new Rect (Xposition, Yposition, Xsize, Ysize), String);
			GUI.skin.box.wordWrap = true;
			InputString = GUI.TextField (new Rect (Xposition1, Yposition1, Xsize1, Ysize1), InputString, 25);
		}
	}
}

@snowy6409 You forgot to end your bracket.
It should be:
if (isLocalPlayer){
return;
}

as it is in your current code you use return if isLocalPlayer is true, thus the rest of the code will never run, hence “Unreachable code”.