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java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.ViewGroup.getScrollX()' on a null object reference at android.app.ActivityTransitionCoordinator.setSharedElementState(ActivityTransitionCoordinator.java:435) at android.app.ActivityTransitionCoordinator.setSharedElementState(ActivityTransitionCoordinator.java:473) at android.app.EnterTransitionCoordinator.startSharedElementTransition(EnterTransitionCoordinator.java:332) at android.app.EnterTransitionCoordinator.access$200(EnterTransitionCoordinator.java:42) at android.app.EnterTransitionCoordinator$5$1.run(EnterTransitionCoordinator.java:389) at android.app.ActivityTransitionCoordinator.startTransition(ActivityTransitionCoordinator.java:698) at android.app.EnterTransitionCoordinator$5.onPreDraw(EnterTransitionCoordinator.java:386) at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:847) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1990) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1088) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5825) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:769) at android.view.Choreographer.doCallbacks(Choreographer.java:582) at android.view.Choreographer.doFrame(Choreographer.java:552) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:755) 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:5237) 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:912) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:707)