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I have tried multiple playgrounds and consistently get the same error in any playground I create. There is a tabular data playground that does work but I see nothing I am not doing. Here is the code that fails with Error: cannot find 'MLDataTable' in scope /* code start */ import CoreML import Foundation import TabularData let jsonFile = Bundle.main.url(forResource: "sentiment_analysis", withExtension: "json")! let tempTable = try DataTable let dataTable = try MLDataTable(contentsOf: jsonFile) print(dataTable) /* code end */