Unity "AdMob" hatası

Assets\Admobb.cs(64,9): error CS0176: Member 'InterstitialAd.Load(string, AdRequest, Action<InterstitialAd, LoadAdError>)' cannot be accessed with an instance reference; qualify it with a type name instead

2023.04.07 15:42:00.462 6001 6028 Error Unity AndroidJavaException: java.lang.ClassNotFoundException: com.google.unity.ads.UnityInterstitialAdCallback
2023.04.07 15:42:00.462 6001 6028 Error Unity java.lang.ClassNotFoundException: com.google.unity.ads.UnityInterstitialAdCallback
2023.04.07 15:42:00.462 6001 6028 Error Unity     at java.lang.Class.classForName(Native Method)
2023.04.07 15:42:00.462 6001 6028 Error Unity     at java.lang.Class.forName(Class.java:453)
2023.04.07 15:42:00.462 6001 6028 Error Unity     at com.unity3d.player.UnityPlayerForActivityOrService.nativeRender(Native Method)
2023.04.07 15:42:00.462 6001 6028 Error Unity     at com.unity3d.player.L.handleMessage(Unknown Source:140)
2023.04.07 15:42:00.462 6001 6028 Error Unity     at android.os.Handler.dispatchMessage(Handler.java:102)
2023.04.07 15:42:00.462 6001 6028 Error Unity     at android.os.Looper.loop(Looper.java:193)
2023.04.07 15:42:00.462 6001 6028 Error Unity     at com.unity3d.player.O.run(Unknown Source:24)
2023.04.07 15:42:00.462 6001 6028 Error Unity Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.unity.ads.UnityInterstitialAdCallback" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/com.DefaultCompany.Oyununity-1yVUILaOnOLnUjakGHA90Q==/base.apk"],nativeLibraryDirectories=[/data/app/com.DefaultCompany.Oyununity-1yVUILaOnOLnUjakGHA90Q==/lib/arm, /data/app/com.DefaultCompany.Oyununity-1yVUILaOnOLnUjakGHA90Q==/base.a
2023.04.07 15:42:00.514 6001 6028 Error Unity AndroidJavaException: java.lang.ClassNotFoundException: com.google.unity.ads.UnityInterstitialAdCallback
2023.04.07 15:42:00.514 6001 6028 Error Unity java.lang.ClassNotFoundException: com.google.unity.ads.UnityInterstitialAdCallback
2023.04.07 15:42:00.514 6001 6028 Error Unity     at java.lang.Class.classForName(Native Method)
2023.04.07 15:42:00.514 6001 6028 Error Unity     at java.lang.Class.forName(Class.java:453)
2023.04.07 15:42:00.514 6001 6028 Error Unity     at com.unity3d.player.UnityPlayerForActivityOrService.nativeRender(Native Method)
2023.04.07 15:42:00.514 6001 6028 Error Unity     at com.unity3d.player.L.handleMessage(Unknown Source:140)
2023.04.07 15:42:00.514 6001 6028 Error Unity     at android.os.Handler.dispatchMessage(Handler.java:102)
2023.04.07 15:42:00.514 6001 6028 Error Unity     at android.os.Looper.loop(Looper.java:193)
2023.04.07 15:42:00.514 6001 6028 Error Unity     at com.unity3d.player.O.run(Unknown Source:24)
2023.04.07 15:42:00.514 6001 6028 Error Unity Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.unity.ads.UnityInterstitialAdCallback" on path: DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/com.DefaultCompany.Oyununity-1yVUILaOnOLnUjakGHA90Q==/base.apk"],nativeLibraryDirectories=[/data/app/com.DefaultCompany.Oyununity-1yVUILaOnOLnUjakGHA90Q==/lib/arm, /data/app/com.DefaultCompany.Oyununity-1yVUILaOnOLnUjakGHA90Q==/base.a

using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using GoogleMobileAds.Api;
using GoogleMobileAds.Common;
using System;
using System.Collections.Generic;
using System.Collections;
using UnityEngine.SceneManagement;

public class Admobb : MonoBehaviour
{   

    public GameObject yukleniyor;
    public GameObject yukleniyor2;
    public string _adUnitId ="ca-app-pub-3940256099942544/1033173712";
    private InterstitialAd reklamObjesi;
 
    void Start()
    {
        MobileAds.Initialize( reklamDurumu => { } );
        YeniReklamAl( null, null );
    }
    
public void ShowAd()
{
    if (reklamObjesi != null && reklamObjesi.CanShowAd())
    {
        Debug.Log("Showing interstitial ad.");
        yukleniyor.SetActive(false);
        reklamObjesi.Show();
    }
    else
    {
        Debug.LogError("Interstitial ad is not ready yet.");
    }
}
 
 
    public void YeniReklamAl( object sender, EventArgs args )
    {
        if (PlayerPrefs.GetString("durum") == "menu")
        {
            SceneManager.LoadScene("Menu");
            PlayerPrefs.SetString("durum","bos");
            Time.timeScale = 1f;
        }
        if (PlayerPrefs.GetString("durum") == "oyun3")
        {
            SceneManager.LoadScene("oyun3");
            PlayerPrefs.SetString("durum","bos");
            Time.timeScale = 1f;
        }
        if (PlayerPrefs.GetString("durum") == "oyun2")
        {
            SceneManager.LoadScene("oyun2");
            PlayerPrefs.SetString("durum","bos");
            Time.timeScale = 1f;
        }
        if (PlayerPrefs.GetString("durum") == "oyun1")
        {
            SceneManager.LoadScene("Oyun");
            PlayerPrefs.SetString("durum","bos");
            Time.timeScale = 1f;
        }
        if( reklamObjesi != null )
            reklamObjesi.Destroy();
        AdRequest request = new AdRequest.Builder().Build();
        InterstitialAd.Load(_adUnitId,request, (InterstitialAd ad, LoadAdError loadad) =>
        {
            if (loadad != null)
            {
                Debug.LogError("interstitial ad failed to load an ad " +
                                 "with error : " + loadad);
                return;
            }
            else
            if (ad == null)
            {
                return;
            }
            Debug.Log("Interstitial ad loaded");
            reklamObjesi = ad;
        });
        reklamObjesi.OnAdFullScreenContentClosed += () =>
        {
            if (PlayerPrefs.GetString("durum") == "menu")
            {
                SceneManager.LoadScene("Menu");
                PlayerPrefs.SetString("durum","bos");
                Time.timeScale = 1f;
            }
            if (PlayerPrefs.GetString("durum") == "oyun3")
            {
                SceneManager.LoadScene("oyun3");
                PlayerPrefs.SetString("durum","bos");
                Time.timeScale = 1f;
            }
            if (PlayerPrefs.GetString("durum") == "oyun2")
            {
                SceneManager.LoadScene("oyun2");
                PlayerPrefs.SetString("durum","bos");
                Time.timeScale = 1f;
            }
            if (PlayerPrefs.GetString("durum") == "oyun1")
            {
                SceneManager.LoadScene("Oyun");
                PlayerPrefs.SetString("durum","bos");
                Time.timeScale = 1f;
            }   
        };            // Kullanıcı reklamı kapattıktan sonra çağrılır
    reklamObjesi.OnAdImpressionRecorded += () =>
    {
        ReklamIstegiOlustur();
    };
    }
    
private AdRequest ReklamIstegiOlustur()
    {
        return new AdRequest.Builder().Build();
    }
 
    void OnDestroy()
    {
        if( reklamObjesi != null )
            reklamObjesi.Destroy();
    }
    
    public void Reklam()
    {
        yukleniyor.SetActive(true);
        yukleniyor2.SetActive(false);
        ShowAd();
    }
}

InterstitialAd.Load(adUnitId, adRequest, (ad, error) => {
    // Do something with the loaded interstitial ad
});