Using CreateML in Playgrounds

I need to build a model to add to my app and tried following the Apple docs here.

No luck because I get an error that is discussed on this thread on the forum. I'm still not clear on why the error is occurring and can't resolve it.

I wonder if CreateML inside Playgrounds is still supported at all? I tried using the CreateML app that you can access through developer tools but it just crashes my Mac (2017 MBP - is it just too much of a brick to use for ML at this point? I should think not because I've recently built and trained relatively simple models using Tensorflow. + Python on this machine, and the classifier I'm trying to make now is really simple and doesn't have a huge dataset).

It's supported in Playground. The referred thread is caused by a known SDK issue (without knowing your specific OS/Xcode configs, it's hard to confirm). I'd suggest upgrade to latest macOS and Xcode to try again.

Using CreateML in Playgrounds
 
 
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