: CoreFoundation Crash Item : _CF_forwarding_prep_0 Issue Details : Fatal Exception: NSInvalidArgumentException 0 CoreFoundation 0x99288 __exceptionPreprocess 1 libobjc.A.dylib 0x16744 objc_exception_throw 2 CoreFoundation 0x176ef4 __CFExceptionProem 3 CoreFoundation 0x2de98 forwarding 4 CoreFoundation 0x2cf70 _CF_forwarding_prep_0 5 UIKitCore 0x171cd8 -[UIView(UIKitManual) actionForLayer:forKey:] 6 QuartzCore 0xd2ae4 -[CALayer actionForKey:] 7 QuartzCore 0x3ac90 CA::Layer::mark_visible(CA::Transaction*, bool, bool) 8 QuartzCore 0x3ab1c CA::Layer::mark_visible(CA::Transaction*, bool, bool) 9 QuartzCore 0x3ab1c CA::Layer::mark_visible(CA::Transaction*, bool, bool) 10 QuartzCore 0x3ab1c CA::Layer::mark_visible(CA::Transaction*, bool, bool) 11 QuartzCore 0x3ab1c CA::Layer::mark_visible(CA::Transaction*, bool, bool) 12 QuartzCore 0x3ab1c CA::Layer::mark_visible(CA::Transaction*, bool, bool) 13 QuartzCore 0x3ab1c CA::Layer::mark_visible(CA::Transaction*, bool, bool) 14 QuartzCore 0x3ab1c CA::Layer::mark_visible(CA::Transaction*, bool, bool) 15 QuartzCore 0xcba58 CA::Layer::set_visible(unsigned int) 16 QuartzCore 0xf9304 CA::Context::set_layer(void const*) 17 UIKitCore 0x1ec408 __UIContextBinderDisposeContextForBindable 18 UIKitCore 0x2ddb30 -[_UIContextBinder purgeContextsWithPurgeAction:afterPurgeAction:] 19 UIKitCore 0x3214ec -[UIWindowScene _prepareForSuspend] 20 UIKitCore 0x1de6f0 -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:] 21 UIKitCore 0x221cc4 -[UIScene scene:didUpdateWithDiff:transitionContext:completion:] 22 UIKitCore 0x1ac038 -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:] 23 FrontBoardServices 0xce18 -[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:] 24 FrontBoardServices 0x2513c __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2 25 FrontBoardServices 0xa308 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] 26 FrontBoardServices 0x10824 __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke 27 libdispatch.dylib 0x3a30 _dispatch_client_callout 28 libdispatch.dylib 0x74e0 _dispatch_block_invoke_direct 29 FrontBoardServices 0xbc70 FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK 30 FrontBoardServices 0xb040 -[FBSSerialQueue _targetQueue_performNextIfPossible] 31 FrontBoardServices 0xf700 -[FBSSerialQueue _performNextFromRunLoopSource] 32 CoreFoundation 0xbb414 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION 33 CoreFoundation 0xcc1a0 __CFRunLoopDoSource0 34 CoreFoundation 0x5694 __CFRunLoopDoSources0 35 CoreFoundation 0xb05c __CFRunLoopRun 36 CoreFoundation 0x1ebc8 CFRunLoopRunSpecific 37 GraphicsServices 0x1374 GSEventRunModal 38 UIKitCore 0x514648 -[UIApplication _run] 39 UIKitCore 0x295d90 UIApplicationMain 40 TCPApp 0xa34528 main + 39 (AppDelegate.swift:39) 41 ??? 0x1047f5ce4 (Missing) Crash Events : This issue has 5 crash events affecting 5 users Device For Max count : iPhone OS for Max count : IOS 15