My Mac will not run Xcode 15.3 which uses Swift 5.10. It will run Xcode 15.2 which uses Swift 5.9.2. The problem I am seeing is that Apple provides the language guide for Swift 5.10 but not the guide for Swift 5.9. Is this a real problem or am I over reacting, if not, where can I get and how do I install the reference guide for Swift 5.9 that will show up in Xcode

When I open a new blank playground in Xcode the very first line "import cocoa" gets the alert "Could not build Objective-C module 'Cocoa'". Can someone please tell me what I have done wrong and how I can fix it. Xcode 15.0.1 Ventura 13.6.1