Скачать или смотреть Android : cannot convert from android.app.FragmentManager to android.support.v4.app.FragmentManager

Android : cannot convert from android.app.FragmentManager to android.support.v4.app.FragmentManager
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On Google, Search for "hows tech developer connect"

As promised, I have a hidden feature that I want to share with you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
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A brief introduction of myself,
Hi, my name is Delphi, nice to meet you.
I am here to help you get the answers you are seeking.
Android : cannot convert from android.app.FragmentManager to android.support.v4.app.FragmentManager
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convert cannot Android from android.app.FragmentManager : to android.support.v4.app.FragmentManager