Play-games-plugin-for-unity: How to Download These Packages?

[Only4Gamers]

How to download following Packages:
Android Support Library
Local Maven repository for Support Libraries (Also known as Android Support Repository)
Google Repository

As these packages are no longer available in Android Studio, How I can download these Packages?

Also consider updating Tutorial.

[Afmj22]

Have you tried to clone? https://github.com/playgameservices/play-games-plugin-for-unity#plugin-installation

[Only4Gamers]

Have you tried to clone? https://github.com/playgameservices/play-games-plugin-for-unity#plugin-installation

These packages are not included in Plugin. So no benefit of cloning. Did you used this plugin?

[Afmj22]

I just added the package and made sure the android jdk, ndk, sdk on the preferences was set up correctly, you might have to select them manually since i had some problems with the automatic configuration.

[Only4Gamers]

I just added the package and made sure the android jdk, ndk, sdk on the preferences was set up correctly, you might have to select them manually since i had some problems with the automatic configuration.

Sorry, but it's looking like some kind of confusion.
I am looking for these 3 packages:

1. Android Support Library
2. Local Maven repository for Support Libraries (Also known as Android Support Repository)
3. Google Repository

Are they necessary? Are they included?

I already got UnityPackage of this plugin in Current-Build Folder and setup everything correctly. Everything is working, except some errors I mentioned here:
https://github.com/playgameservices/play-games-plugin-for-unity/issues/2945

So main problem is errors I mentioned in above link. Please go to above link and help me on this.
Thank you so much.

[Afmj22]

Well as far as im aware and from experience since i just added a game to goople play yesterday, i did not need any of the packages you mentioned. If you are using a database you have to pass a token for validation so that might be the problem.