Instantiate Aiplane Client is not the MasterClient in the room

Failed to InstantiateSceneObject prefab. AirPlane, Client is not the MasterClient in the room

image and script below:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class FlareAirDrop : MonoBehaviour {

	public GameObject AirPlane;
	public GameObject AirDrop;
	public float speed;
	private bool suport = false;
	public PhotonView photonView;
	private bool suport2 = false;

	[PunRPC]
	public void Airplanespawn (){

		AirPlane = PhotonNetwork.InstantiateSceneObject ("AirPlane", new Vector3 (Random.Range (-1000, 1000), 230, -100), Quaternion.identity, 0, null) as GameObject;

		Vector3 relativePos = AirPlane.transform.position - transform.position;
		Quaternion rotation = Quaternion.LookRotation(relativePos);
		AirPlane.transform.rotation = rotation;
	}

	[PunRPC]
	public void airdropspawn (){

		AirDrop = PhotonNetwork.InstantiateSceneObject ("AirDrop", new Vector3 (AirPlane.transform.position.x, AirPlane.transform.position.y - 10, AirPlane.transform.position.z), Quaternion.identity, 0, null) as GameObject;

	}

	void Update () {

		if (Input.GetKeyDown ("e")) {

			if (photonView.isMine) {
				gameObject.GetComponent<PhotonView> ().RPC ("Airplanespawn", PhotonTargets.All, null);
				suport2 = true;
			}
		}

		float step = speed * Time.deltaTime;

		if (suport == false && suport2 == true) {

			AirPlane.transform.position = Vector3.MoveTowards (AirPlane.transform.position, new Vector3 (transform.position.x, 230, transform.position.z), step);
		
		}  

		if (suport == true) {
			
			AirPlane.transform.Translate (0, 0.2f, -step);

		}

		if (AirPlane.transform.position.z >= transform.position.z && suport == false) {

				suport = true;
				suport2 = true;
				Debug.LogAssertionFormat ("AirDroped");
				photonView.RPC ("airdropspawn", PhotonTargets.All, null);

			}
		}
	}