12-07 16:34:04.858 18485 18485 E AndroidRuntime: Process: com.android.settings, PID: 18485
12-07 16:34:04.858 18485 18485 E AndroidRuntime: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.preference.Preference.onPrepareForRemoval()' on a null object reference
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.preference.PreferenceGroup.removePreferenceInt(PreferenceGroup.java:298)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.preference.PreferenceGroup.removePreference(PreferenceGroup.java:274)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at com.crdroid.settings.fragments.Notifications.onCreate(Notifications.java:84)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.Fragment.performCreate(Fragment.java:2596)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:831)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentTransition.addToFirstInLastOut(FragmentTransition.java:1197)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentTransition.calculateFragments(FragmentTransition.java:1080)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentTransition.startTransitions(FragmentTransition.java:119)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(FragmentManagerImpl.java:1853)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManagerImpl.java:1811)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentManagerImpl.execSingleAction(FragmentManagerImpl.java:1686)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:299)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.fragment.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:230)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1238)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.viewpager.widget.ViewPager.setCurrentItemInternal(ViewPager.java:673)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.viewpager.widget.ViewPager.setCurrentItemInternal(ViewPager.java:635)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at androidx.viewpager.widget.ViewPager.setCurrentItem(ViewPager.java:616)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at com.crdroid.settings.PagerSlidingTabStrip$1.onClick(PagerSlidingTabStrip.java:259)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.view.View.performClick(View.java:7140)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.view.View.performClickInternal(View.java:7117)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.view.View.access$3500(View.java:801)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.view.View$PerformClick.run(View.java:27351)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.os.Handler.handleCallback(Handler.java:883)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.os.Handler.dispatchMessage(Handler.java:100)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.os.Looper.loop(Looper.java:214)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at android.app.ActivityThread.main(ActivityThread.java:7356)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at java.lang.reflect.Method.invoke(Native Method)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
12-07 16:34:04.858 18485 18485 E AndroidRuntime:    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)