SwiftDate langs folder contains a project?

[crenelle]

Every time I compile, I get the following error:

/Users/bentley/Library/Developer/Xcode/DerivedData/myproject-bhvokhypypgooyfufngrjsmjjohq/SourcePackages/checkouts/SwiftDate/Sources/SwiftDate/Formatters/RelativeFormatter/langs Couldn't load project at: /Users/bentley/Library/Developer/Xcode/DerivedData/myproject-bhvokhypypgooyfufngrjsmjjohq/SourcePackages/checkouts/SwiftDate/Sources/SwiftDate/Formatters/RelativeFormatter/langs

That folder contains quite a few .json files.

I removed and reinstalled the package with no apparent improvement.