Unknown symbol(s)?

Okay, so I'm making a hovercar game in Unity, and some unknown symbol errors are popping up in the console. I can't seem to find the errors, and I followed a Youtube tutorial to the letter. Help?

using UnityEngine; using System.Collections;

public class PlayerController : MonoBehaviour { public Rigidbody rb; float m_deadzone = 0.1f;

 public float forwardAccel = 100.0f;
 public float backwardAccel = 25.0f;
 float currentThrust = 0.0f;

 public float m_turnStrength = 10f;
 float m_currTurn = 0.0f;    
 
 private float strafe;
 private Vector3 strafePos;
 private float currentStrafe;
 public float strafeRate;    

 public GameObject shot;
 public Transform shotSpawn;
 public Transform shotSpawn1;
 public float fireRate;

 private float nextFire;
 private float nextFire1;

 int m_layerMask;
 public float m_hoverForce = 9.0f;
 public float m_hoverHeight = 2.0f;
 public GameObject[] m_hoverPoints;
 
 void Start()
 {
     rb = GetComponent<Rigidbody>();
     m_layerMask = 1 << LayerMask.NameToLayer("Player");
     m_layerMask = ~m_layerMask;
 }
 
 void Update()
 {
     currentThrust = 0.0f;
     float accelAxis = Input.GetAxis("Vertical");
     
     strafe = Input.GetAxis("Horizontal");
     
     m_currTurn = 0.0f;
     
     float turnAxis = Input.GetAxis("RotateHorizontal");
     
     if (Mathf.Abs(turnAxis) > m_deadZone)
     {
         m_currTurn = turnAxis;
     }
     
     if(accelAxis > m_deadzone)
     {
         currentThrust = accelAxis * forwardAccel;
      }
     
     else if(accelAxis < m_deadzone)
     {
         currentThrust = accelAxis * backwardAccel;
      }
     
     if(strafe > m_deadzone)
     {
         currentStrafe = strafe * strafeRate;
     }

     else if(strafe < m_deadzone)
     {
         currentStrafe = strafe * strafeRate;
     }
     
     strafePos = Quaternion.Euler(0f, transform.eulerAngles.y,0f) * new Vector3(currentStrafe,0f,0f);
     
     if (Input.GetButton("Shoot") && Time.time > nextFire)
        {
         nextFire = Time.time + fireRate;
         shot.SetActive(true);
         Instantiate(shot, shotSpawn.position, shotSpawn.rotation);
        }
     
     if (Input.GetButton("Shoot") && Time.time > nextFire1)
        {
         nextFire1 = Time.time + fireRate;
         shot.SetActive(true);
         Instantiate(shot, shotSpawn1.position, shotSpawn1.rotation);
        }
 }

 void FixedUpdate()
 {
     RaycastHit hit;
     for(int i = 0; i < m_hoverPoints.Length; i++)
     {
         var hoverPoint = m_hoverPoints[i];
             if(Physics.Raycast(hoverPoint.transform.position,-Vector3.up,out hit,m_hoverHeight,m_layerMask))
         {
             rb.AddForceAtPosition(Vector3.up * m_hoverForce * (1.0f - (hit.distance / m_hoverHeight)), hoverPoint.transform.position);
         }
     }
     
     else
     {
         if(transform.position.y > hoverPoint.transform.position.y)
         {
             rb.AddForceAtPosition(hoverPoint.transform.up * m_hoverForce, hoverPoint.transform.position); 
         }
         
         else
         {
             rb.AddForceAtPosition(hoverPoint.transform.up * -m_hoverForce, hoverPoint.transform.position); 
         }
     }
     
     if(Mathf.Abs(currentThrust) > 0)
     {
         rb.AddForce(transform.forward * currentThrust);
     }
     
     if (m_currTurn > 0)
     {
         rb.AddRelativeTorque(Vector3.up * m_currTurn * m_turnStrength);
     }
     
     else if(m_currTurn < 0)
     {
         rb.AddRelativeTorque(Vector3.up * m_currTurn * m_turnStrength);
     }

     if(Mathf.Abs(currentStrafe) > 0)
     {
         rb.AddForce(strafePos);    
     }            
 }
 
 void OnDrawGizmos()
 

}