StackFrameSymbolName = '_$s4Book17setUpLiveViewWithyyAA9GridWorldCF' StackFrameFile = '/Users/dazaxer/Library/Mobile Documents/iCloud~com~apple~Playgrounds/Documents/Learn to Code 2.playgroundbook/Contents/Modules/aygroundmodule/Sources/LiveViewConfiguration.swift' StackFrameSymbolName = '_$s4Book15SceneControllerC5sceneAcA0B0C_tcfC' StackFrameSymbolName = '_$s4Book15SceneControllerC5sceneAcA0B0C_tcfc'

StackFrameFile = '/Users/dazaxer/Library/Mobile Documents/iCloud~com~apple~Playgrounds/Documents/Learn to Code 2.playgroundbook/Contents/Modules/aygroundmodule/Sources/SceneController.swift' StackFrameSymbolName = '_$sSo7SCNViewCABycfC' StackFrameSymbolName = '_$sSo7SCNViewCABycfcTO' StackFrameSymbolName = '_C3DEngineContextSetRenderContext'

['DispatchQueueName': -thread, 'StackFrameDictionaries': (ĬrashAnnotationMessage = '*** CFRetain() called with NULL ***'

Which model of macbook Pro are you using? I personaly use the 2008 model with a patcher for having Catalina and I think that this happens because of the old GPU but if you have a newer model and you also having this problem, something else happens.Įrror: *** CFRetain() called with NULL *** And this is the error I have the same problem.

Swift playground on macbook pro