Object reference not set to an instance of an object ADManager.HandleBannerADEvents (System.Boolean

Unity Engine
1

Hello!

I got this error, before couple day working fine but now i get this.
I dont modifiy that just gonna be wrong.

NullReferenceException: Object reference not set to an instance of an object
ADManager.HandleBannerADEvents (System.Boolean subscribe) (at Assets/ADManager.cs:106)
ADManager.OnEnable () (at Assets/ADManager.cs:134)

    void HandleBannerADEvents( bool subscribe )
    {
        if( subscribe )
        {
            bannerAD.OnAdLoaded += HandleOnAdLoaded; < HERE IS LINE 106 >
        
            bannerAD.OnAdFailedToLoad += HandleOnAdFailedToLoad;
        
            bannerAD.OnAdOpening += HandleOnAdOpened;
        
            bannerAD.OnAdClosed += HandleOnAdClosed;
        
            bannerAD.OnAdLeavingApplication += HandleOnAdLeavingApplication;
        
        }
        else
        {
            bannerAD.OnAdLoaded -= HandleOnAdLoaded;
        
            bannerAD.OnAdFailedToLoad -= HandleOnAdFailedToLoad;
        
            bannerAD.OnAdOpening -= HandleOnAdOpened;
        
            bannerAD.OnAdClosed -= HandleOnAdClosed;
        
            bannerAD.OnAdLeavingApplication -= HandleOnAdLeavingApplication;
        
        }
    }

    void OnEnable()
   {
       HandleBannerADEvents(true); < HERE IS LINE 134 >
   }

   void OnDisable()
   {
       HandleBannerADEvents(false);
   }
2

Thanks in advance!

3

bannerAd is probably null. Verify that with Debug.Log. Make it not null before you use it to fix.