here are source files. original data and mocked normalised https://gist.github.com/nysander/4a37db1abde1bfa4b58706ca2d1ae27e

yes. that is my feedback Update: This error is the same for CreateML app bundled with Xcode 11.5 and 12-beta

Hello, as added to Feedback I have used normalised data with dummy ratings of 0.0 and it also didn't worked at all I have been talking with other person who had similar problems and according to this post: https://stackoverflow.com/posts/comments/110994450?noredirect=1 I have tested my dummy ratings with values bigger than 0 (used 0.1) and model was trained for the first time with ratings enabled. So data has to be: normalized (every user rates every item) dummy ratings has to be higher than 0 I've created pandas python script for data normalisation and I'm really happy to have it working Please update docs with this informations if possible so people trying to use MLRecommender has direct knowledge what they should do to make it working.

same here, one build successful around 1,5h ago, now failure with this error

same here, I've filled feedback report:  FB9633130

same here, I've filled feedback report:  FB9633130

filled FB9808472, same here for iOS 14.5 device on Xcode 13.2