java.lang.NullPointerException: Attempt to read from field 'int com.android.server.wm.Task.mTaskId' on a null object reference
	at android.os.Parcel.createExceptionOrNull(Parcel.java:2395)
	at android.os.Parcel.createException(Parcel.java:2373)
	at android.os.Parcel.readException(Parcel.java:2356)
	at android.os.Parcel.readException(Parcel.java:2298)
	at android.app.IActivityTaskManager$Stub$Proxy.reportAssistContextExtras(IActivityTaskManager.java:5185)
	at android.app.ActivityThread.handleRequestAssistContextExtras(ActivityThread.java:4152)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2370)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:265)
	at android.app.ActivityThread.main(ActivityThread.java:8360)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:632)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)