Bug I got error if I click the rewarded ads button second time

If I click rewarded ads button a second time I got the error codes below from the following lines
It only works again if I close and reopen Unity.

MissingReferenceException: The object of type 'GameObject' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
UnityEngine.Advertisements.Placeholder.HideSkipButton (UnityEngine.GameObject canvasGameObject) (at Library/PackageCache/com.unity.ads@4.0.0/Runtime/Advertisement/Platform/Editor/Placeholder.cs:178)
UnityEngine.Advertisements.Placeholder.Show (System.String placementId, System.Boolean allowSkip) (at Library/PackageCache/com.unity.ads@4.0.0/Runtime/Advertisement/Platform/Editor/Placeholder.cs:79)
UnityEngine.Advertisements.Platform.Editor.EditorPlatform+<>c__DisplayClass14_0.<Show>b__0 () (at Library/PackageCache/com.unity.ads@4.0.0/Runtime/Advertisement/Platform/Editor/EditorPlatform.cs:152)
UnityEngine.Advertisements.Utilities.CoroutineExecutor.Update () (at Library/PackageCache/com.unity.ads@4.0.0/Runtime/Advertisement/Utilities/CoroutineExecutor.cs:17)

 

I found the reason
it was Editor's Play Mode Options. When it is enabled ADS doesn't initialize second time or more.

 

It works for me!

I had a problem when I was trying to leave the Play Mode in editor and run again the PlayMode, the console logs shown an error related to an object has been destroyed and you are trying to use that object. I solved this making a temporal fix in the Advertising package version 4.0.0

This is good solution while we wait that the bug is fixed from the Unity side.

Note: The good news, the bug should appear only in editor, the script with the problem is running only in editor.

We need to edit the package code and we have to do the following modifications in order to avoid that Unity PackageManager reimport the package after edit the script and revert our changes.

Fix Steps:
1- first move the package in your project, from Library/PackageCache/com.unity.ads.4.0.0 to Packages/com.unity.ads.4.0.0 (This is for allow to edit the package code and can be able to keep your changes in the package, due the Unity Package Manager will not reimport the package in that folder)
2- After that I modified the script called "PlaceHolder.cs" into the Advertising Package, I attached the script file with my modifications in this post, if you want you could replace this script after move the package folder to the packages folder in your project. It had a problem on initialization.

If you want to see the error, you could review the Awake method in the script, specifically the "m_LandscapeCanvas" and "m_PortraitCanvas", those fields was not initializing correctly at the second time, I am forcing that initialization in my changes in the script attached.

I hope this information can be useful for you guys!

 

thanks good one