java.lang.NullPointerException: Attempt to read from field 'int com.android.server.wm.TaskRecord.taskId' on a null object reference
	at android.os.Parcel.createException(Parcel.java:2080)
	at android.os.Parcel.readException(Parcel.java:2042)
	at android.os.Parcel.readException(Parcel.java:1990)
	at android.app.IActivityTaskManager$Stub$Proxy.reportAssistContextExtras(IActivityTaskManager.java:5439)
	at android.app.ActivityThread.handleRequestAssistContextExtras(ActivityThread.java:3604)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2000)
	at android.os.Handler.dispatchMessage(Handler.java:107)
	at android.os.Looper.loop(Looper.java:224)
	at android.app.ActivityThread.main(ActivityThread.java:7562)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
Caused by: android.os.RemoteException: Remote stack trace:
	at com.android.server.wm.ActivityTaskManagerService.reportAssistContextExtras(ActivityTaskManagerService.java:3135)
	at android.app.IActivityTaskManager$Stub.onTransact(IActivityTaskManager.java:2499)
	at android.os.Binder.execTransactInternal(Binder.java:1021)
	at android.os.Binder.execTransact(Binder.java:994)