[Solved]NullReferenceException problem

Hello.

I have a script attached to planets that makes camera go from "Solar view" to "Planet view" in a smooth lerp. Here are pictures of both views:

Here's the script:

 using UnityEngine;
 using System.Collections;
 
 public class CamSol : MonoBehaviour {
 
     public Vector3 DefPos = new Vector3(0,600,0);
     public Camera Cam;
     public Transform Target;
     public float MinDis = 50f;
     
     private float MoveChange = 0f;
     private float t;
     public float RandomFloat;
     
     
     void Start () {
         
         }
     
     
     void OnMouseUp(){
     
         MoveChange++;
     
     }
     
     
     void Update () {
         
         Camera Cam = Camera.current;
 
         
         
         
         transform.RotateAround(new Vector3(0,0,0), Vector3.up, RandomFloat *  Time.deltaTime);
         Transform Target = transform.transform; 
         
         
         
         if(MoveChange == 1f  ){
 
             
              
         
             t+=Time.deltaTime;
             
             Vector3 Smth = Target.transform.position - Cam.transform.position;
             Quaternion Rot = Quaternion.LookRotation(Smth);
             Cam.transform.rotation = Quaternion.Lerp(Cam.transform.rotation, Rot, t/5);
             
             Vector3 Pos = new Vector3(Target.transform.position.x, Target.transform.position.y, Target.transform.position.z -MinDis);
             
             Cam.transform.position = Vector3.Lerp(DefPos, Pos, t * 1.5f);  
             
             
             
         }
         
         if(MoveChange == 2f){
             
             t = 0f;
             t+=Time.deltaTime;
             
             Quaternion Rot = Quaternion.Euler(90,0,0);        
             
             Cam.transform.position = Vector3.Lerp(Cam.transform.position, DefPos, t*1.5f);    
             Cam.transform.rotation = Quaternion.Lerp (Cam.transform.rotation, Rot, t*1.5f);
             
         }
     
     if(MoveChange == 3f){
             
             
             MoveChange = 1f;
             
     }    
     
     }
 
 
 }

[Edit] Problem solved, you need to change Camera.current into Camera.main

The probelm is, that if I try to go to Planet view in editor I get NullReferenceException Error and the camera is spazzing in the game.

Thanks in advance for any answears.

-Xentarok

P.S: Sorry for any mistakes.

P.S.2: If you have any questions or I didn't explain something in enough detail, write it in the comments.