Bouncing LineRenderer, null exception.

Noob question, I am trying to break a bouncing laser on specific tag but it gets Null Refrence Exception a lot. Works fine if I don't try to break out of the bounce (stops recasting if first object matches), hoping someone can point me in the right direction. It does work, but only for a bit before the error gets thrown.

     void Update () 
     {
     
         nReflections = Mathf.Clamp(nReflections,1,nReflections);
         
         ray = new Ray(goTransform.position,goTransform.up);
         
         
         
 
     nPoints = nReflections;
     lineRenderer.SetVertexCount(nPoints); 
         
     lineRenderer.SetPosition(0,goTransform.position);
         
     for(int i=0;i<=nReflections;i++)
     {
     if(i==0)
             {
                                 if(Physics.Raycast(ray.origin,ray.direction, out hit, 100))
     {  
 
                     
 inDirection = Vector3.Reflect(ray.direction,hit.normal);
                     
 ray = new Ray(hit.point,inDirection);
 
                     
             
 
         if(nReflections==1)
 
                     
         {
                         
                         lineRenderer.SetVertexCount(++nPoints); 
 
 
                     }
                     
                     
                     lineRenderer.SetPosition(i+1,hit.point);    
 
         if (hit.rigidbody.tag == "cell")
                     {
                         break;
                     }
                 
                 }
             }
 else
 {
             
 if(Physics.Raycast(ray.origin,ray.direction, out hit, 100))  
     {
                     
 inDirection = Vector3.Reflect(inDirection,hit.normal);
                     
 ray = new Ray(hit.point,inDirection);
                     
 
                     lineRenderer.SetVertexCount(++nPoints); 
                     
                     lineRenderer.SetPosition(i+1,hit.point);    
                 } 
             }
         
         }
     }