[_NSXPCDistantObject ___nsx_pingHost:]: unrecognized selector sent to instance

Question

Created Jun ’20

Replies 9

Boosts 1

Views 3.1k

Participants 8

Hi there

While developing a new widget with WidgetKit, my app crashes almost immediately every time I launch the extension with the error "[NSXPCDistantObject _nsxpingHost:]: unrecognized selector sent to instance"

Does anyone else have this problem? Is this due to the Xcode beta?

Thanks!

Boost

Answer 1

davidmtamas OP

Jul ’20

I've had the same issue using Xcode 12.0db1, deleting the app from my device, and restarting Xcode resolved the issue for me.

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Answer 2

gpambrozio OP

Jul ’20

Happening for me as well and restarting XCode not always solves the issue, very random. If I enable breakpoints on exceptions this is the stack trace when it happens:

Code Block #0	0x000000019e7be234 in objc_exception_throw ()
#1	0x000000019e9acc4c in -[NSObject(NSObject) doesNotRecognizeSelector:] ()
#2	0x000000019ea9db24 in _forwarding_ ()
#3	0x000000019ea9fa9c in _CF_forwarding_prep_0 ()
#4	0x00000001de71a1c4 in -[EXExtensionContextImplementation _willPerformHostCallback:] ()
#5	0x00000001de71c4c4 in __112-[EXConcreteExtensionContextVendor _beginRequestWithExtensionItems:listenerEndpoint:withContextUUID:completion:]_block_invoke ()
#6	0x000000019e75a6f0 in _dispatch_call_block_and_release ()
#7	0x000000019e75b6d8 in _dispatch_client_callout ()
#8	0x000000019e704cf0 in _dispatch_lane_serial_drain$VARIANT$mp ()
#9	0x000000019e7057cc in _dispatch_lane_invoke$VARIANT$mp ()
#10	0x000000019e70f170 in _dispatch_workloop_worker_thread ()
#11	0x000000019e7b25a4 in _pthread_wqthread ()

1

Answer 3

gpambrozio OP

Jul ’20

I created feedback FB7851894 for this. Hope it gets resolved soon, it's really painful to debug my extension now.

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Answer 4

sarveshm OP

Jul ’20

Getting the same error. Any luck solving it?

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Answer 5

chenk OP

Jul ’20

Also happens to me.
Xcode 12.0 beta 2 on a device and on a Simulator.
Reinstalling the app solves it, but it works only for one time. After one run I must reinstall again. Really painful.

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Answer 6

parwezaamir66 OP

Apr ’22

Did anyone find the answer to this error?

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Answer 7

parwezaamir66 OP

Apr ’22

Did anyone find the answer to this error?

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Answer 8

RealCasually OP

Jun ’22

Has anyone had success here? This is still happening on Xcode 14 beta 2 and blocking development of new widgets.

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Answer 9

chenw OP

Nov ’22

I had this error on M1 Macbook Air, but it turns out it's because I was running Xcode with Rosetta. Try unchecking Rosetta.

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