Can anyone please tell me why this script doesnt work? - Raycasting

Hi,

I have 3 rays set up to look in the left-diagonal, forward and right-diagonal directions. The forward and right-diagonal are working (detecting objects) but the left-diagonal is not.

I was wondering if anyone can shed any light on what the issue could be? The script is shown below:

Thanks

 {
     private Vector3 fwd = Vector3.zero;
 
     private Vector3 diagonal_left = Vector3.zero;
 
     private Vector3 diagonal_right = Vector3.zero;
 
  void Start () 
     {
         fwd = transform.TransformDirection(Vector3.forward);
 
         diagonal_left = new Vector3(-1f, 0f, 1f).normalized;
 
         diagonal_right = new Vector3(1f, 0f, 1f).normalized;
  }
  
  void Update () 
     {
         RaycastHit hit;
 
         Debug.DrawRay(transform.position, fwd * 500, Color.green);
 
      if(Physics.Raycast(transform.position, fwd, out hit, 100) )
         {
             Debug.Log ("Front Hit!");
             Debug.DrawRay(transform.position, fwd * 500, Color.red);
         }
 
         Debug.DrawRay(transform.position, diagonal_left * 100, Color.green);
 
         if(Physics.Raycast(transform.position, diagonal_left, out hit, 100) )
         {
              Debug.Log ("Left Diagonal Hit!");
              Debug.DrawRay(transform.position, diagonal_left * 100, Color.red);
         }
 
          Debug.DrawRay(transform.position, diagonal_right * 100, Color.green);
 
         if(Physics.Raycast(transform.position, diagonal_right, out hit, 100) )
         {
              Debug.Log ("Right Diagonal Hit!");
              Debug.DrawRay(transform.position, diagonal_right * 100, Color.red);
         }
  }
 }