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:2379)
	at android.os.Parcel.createException(Parcel.java:2357)
	at android.os.Parcel.readException(Parcel.java:2340)
	at android.os.Parcel.readException(Parcel.java:2282)
	at android.app.IActivityTaskManager$Stub$Proxy.reportAssistContextExtras(IActivityTaskManager.java:5185)
	at android.app.ActivityThread.handleRequestAssistContextExtras(ActivityThread.java:3749)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2028)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:223)
	at android.app.ActivityThread.main(ActivityThread.java:7697)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:952)
Caused by: android.os.RemoteException: Remote stack trace:
	at com.android.server.wm.ActivityTaskManagerService.reportAssistContextExtras(ActivityTaskManagerService.java:3196)
	at android.app.IActivityTaskManager$Stub.onTransact(IActivityTaskManager.java:2404)
	at android.os.Binder.execTransactInternal(Binder.java:1159)
	at android.os.Binder.execTransact(Binder.java:1123)