Project Roll a ball question

Why in the tutorial section Creating Collectable Objects PlayerController a different script, in relation to section Collecting and counting? When i try on my phone commands do not work?

Creating Collectable Objects script

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class PlayerConroller : MonoBehaviour
{
public float speed;

void FixedUpdate ()
{
float moveHorizontal = Input.GetAxis("Horizontal");
float moveVertical = Input.GetAxis("Vertical");

Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);

GetComponent<Rigidbody>().AddForce (movement * speed * Time.deltaTime);
}
void OnTriggerEnter(Collider other)
{
if (other.gameObject.CompareTag ("Pick Up"))
{
other.gameObject.SetActive (false);
}
}
}

Collecting and counting script

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class PlayerConroller : MonoBehaviour
{
public float speed;

private Rigidbody rb;

void Start ()
{
rb = GetComponent<Rigidbody>();
}

void FixedUpdate ()
{
float moveHorizontal = Input.GetAxis("Horizontal");
float moveVertical = Input.GetAxis("Vertical");

Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);

rb.AddForce (movement * speed);
}

void OnTriggerEnter(Collider other)
{
if (other.gameObject.CompareTag ("Pick Up"))
{
other.gameObject.SetActive (false);
}
}
}

 

What the error print?
Seems your class name is different "PlayerConroller"...