iTween RotateTo

I need help. Here's my code.

ublic class Rotation02 : MonoBehaviour {public Transform target; public Transform target2;

// Update is called once per frame void Update () {

         if (Input.GetKeyUp(KeyCode.R))
             iTween.RotateTo(gameObject,iTween.Hash("rotation",target.position,iTween.EaseType.easeInOutSine,"time",1.3f));
         
         if (Input.GetKeyDown(KeyCode.R))
             iTween.RotateTo(gameObject,iTween.Hash("rotation",target2.position,"easetype",iTween.EaseType.easeInOutSine,"time",.9f));
                 
     }
 }

I can play the scene but when I press R I get an error that says:

NullReferenceException: Object reference not set to an instance of an object iTween.CleanArgs (System.Collections.Hashtable args) (at Assets/Standard Assets/Scripts/iTween/Plugins/iTween.cs:6745) iTween.RotateTo (UnityEngine.GameObject target, System.Collections.Hashtable args) (at Assets/Standard Assets/Scripts/iTween/Plugins/iTween.cs:2287) Rotation02.Update () (at Assets/Standard Assets/Scripts/General Scripts/Rotation02.cs:11)

I get another error that says:

Tween Error: Hash requires an even number of arguments! UnityEngine.Debug:LogError(Object) iTween:Hash(Object[]) (at Assets/Standard Assets/Scripts/iTween/Plugins/iTween.cs:6530) Rotation02:Update() (at Assets/Standard Assets/Scripts/General Scripts/Rotation02.cs:11)

The game object that has the script just rotates to the side when I press R.

Any input is appreciated.