Machine Learning - Chapter 13 - Migrate to Apple Watch?

I have been working on migrating the “GestureIt” program from iPhone to iWatch for the motion an ML sequencing, though I get the following runtime error:

" WatchKit App Extension[8136:679751] [espresso] [Espresso::handle_ex_] exception=Unsupported engine type

Has anyone experienced this error or successfully migrated this program to the Apple watch?



@clapollo Can you please help with this when you get a chance? Thank you - much appreciated! :]

Hi @timco62, sorry I didn’t see this question before today — I only stay up to date on the Machine Learning book forum, here: Machine Learning by Tutorials - Forums

It’s been a long time since you posted, so I hope you’ve gotten your app working. I think it’s awesome that you’re making something for the watch! Unfortunately, I’ve never written any code for one myself so I’m not sure about that specific error. However, one question I would ask: Is this error in the simulator or on the device? Because I’ve seen “Unsupported engine type” errors in the simulator before, for things that end up working without error on a device. If it’s happening on the watch itself, then I’ve got no idea, sorry!

Thanks for the reply, no worries. I have since upgraded to Apple’s new beta MacOS Catalina, Xcode 11, iOS 13, and WatchOS 6 and this error has not been repeated again. Appreciate the support!

Great! Glad to hear you got it working!

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