App crashes when I press the fullscreen button if "show description" setting was off!

[AhmedHalim96]

Checklist

• I am using the latest version - x.xx.x
• I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• I have read the contribution guidelines given at https://github.com/TeamNewPipe/NewPipe/blob/HEAD/.github/CONTRIBUTING.md.
• This issue contains only one bug. I will open one issue for every bug report I want to file.

Steps to reproduce the bug

Expected behavior

the video becomes fullscreen

Actual behavior

the app crashes then a giant error message

Logs

Exception

• User Action: ui error
• Request: ACRA report
• Content Country: US
• Content Language: en-US
• App Language: en_US
• Service: none
• Version: 0.21.1
• OS: Linux OPPO/CPH1803/CPH1803:8.1.0/OPM1.171019.026/1595211000:user/release-keys 8.1.0 - 27

Crash log

java.lang.RuntimeException: Unable to start activity ComponentInfo{org.schabi.newpipe/org.schabi.newpipe.MainActivity}: androidx.fragment.app.Fragment$InstantiationException: Unable to instantiate fragment org.schabi.newpipe.fragments.EmptyFragment: could not find Fragment constructor
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2995)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3073)
	at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:5062)
	at android.app.ActivityThread.-wrap18(Unknown Source:0)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1780)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:198)
	at android.app.ActivityThread.main(ActivityThread.java:7055)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:523)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:836)
Caused by: androidx.fragment.app.Fragment$InstantiationException: Unable to instantiate fragment org.schabi.newpipe.fragments.EmptyFragment: could not find Fragment constructor
	at androidx.fragment.app.Fragment.instantiate(Fragment.java:563)
	at androidx.fragment.app.FragmentContainer.instantiate(FragmentContainer.java:57)
	at androidx.fragment.app.FragmentManager$3.instantiate(FragmentManager.java:390)
	at androidx.fragment.app.FragmentStateManager.<init>(FragmentStateManager.java:74)
	at androidx.fragment.app.FragmentManager.restoreSaveState(FragmentManager.java:2454)
	at androidx.fragment.app.Fragment.restoreChildFragmentState(Fragment.java:1706)
	at androidx.fragment.app.Fragment.onCreate(Fragment.java:1683)
	at org.schabi.newpipe.BaseFragment.onCreate(BaseFragment.java:55)
	at org.schabi.newpipe.fragments.detail.VideoDetailFragment.onCreate(VideoDetailFragment.java:279)
	at androidx.fragment.app.Fragment.performCreate(Fragment.java:2684)
	at androidx.fragment.app.FragmentStateManager.create(FragmentStateManager.java:280)
	at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1175)
	at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1356)
	at androidx.fragment.app.FragmentManager.moveFragmentToExpectedState(FragmentManager.java:1434)
	at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1497)
	at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2625)
	at androidx.fragment.app.FragmentManager.dispatchCreate(FragmentManager.java:2571)
	at androidx.fragment.app.FragmentController.dispatchCreate(FragmentController.java:236)
	at androidx.fragment.app.FragmentActivity.onCreate(FragmentActivity.java:315)
	at androidx.appcompat.app.AppCompatActivity.onCreate(AppCompatActivity.java:115)
	at org.schabi.newpipe.MainActivity.onCreate(MainActivity.java:139)
	at android.app.Activity.performCreate(Activity.java:7314)
	at android.app.Activity.performCreate(Activity.java:7305)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1215)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2948)
	... 10 more
Caused by: java.lang.NoSuchMethodException: <init> []
	at java.lang.Class.getConstructor0(Class.java:2320)
	at java.lang.Class.getConstructor(Class.java:1725)
	at androidx.fragment.app.Fragment.instantiate(Fragment.java:548)
	... 34 more

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[AhmedHalim96]

It's not a big deal, It's just strange and I thought it might uncover more bugs

[triallax]

Duplicate of #5941.