java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.resetSubtreeAccessibilityStateChanged()' on a null object reference

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Attempt to invoke virtual method 'void android.view.View.resetSubtreeAccessibilityStateChanged()' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.resetSubtreeAccessibilityStateChanged()' on a null object reference
at android.view.ViewGroup.resetSubtreeAccessibilityStateChanged(ViewGroup.java:2787)
at android.view.ViewGroup.resetSubtreeAccessibilityStateChanged(ViewGroup.java:2787)
at android.view.ViewGroup.resetSubtreeAccessibilityStateChanged(ViewGroup.java:2787)
at android.view.ViewGroup.resetSubtreeAccessibilityStateChanged(ViewGroup.java:2787)
at android.view.ViewGroup.resetSubtreeAccessibilityStateChanged(ViewGroup.java:2787)
at android.view.ViewGroup.resetSubtreeAccessibilityStateChanged(ViewGroup.java:2787)
at android.view.ViewGroup.resetSubtreeAccessibilityStateChanged(ViewGroup.java:2787)
at android.view.View.onAttachedToWindow(View.java:13104)
at android.view.ViewGroup.onAttachedToWindow(ViewGroup.java:3870)
at android.view.View.dispatchAttachedToWindow(View.java:13568)
at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2689)
at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2696)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1386)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1148)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6049)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:773)
at android.view.Choreographer.doCallbacks(Choreographer.java:586)
at android.view.Choreographer.doFrame(Choreographer.java:556)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:759)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5313)
at java.lang.reflect.Method.invoke(Method.java)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1116)

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