How to solve the lldb error in Xcode?

Question

My app works fine on simulator, and worked on the device, but once upon a time it started to crash. I just get "lldb" error with no messages. When I type "bt" command I see this:

• thread #1: tid = 0x24a8, 0x38a1fcc0 libobjc.A.dylib objc_exception_throw, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 frame #0: 0x38a1fcc0 libobjc.A.dylib objc_exception_throw frame #1: 0x2e284bd0 CoreFoundation -[NSException raise] + 8 frame #2: 0x2ebca15e Foundation -[NSObject(NSKeyValueCoding) setValue:forKey:] + 202 frame #3: 0x2ebdbd8c Foundation -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 300 frame #4: 0x2e1f4a54 CoreFoundation -[NSArray makeObjectsPerformSelector:] + 180 frame #5: 0x30e2553e UIKit -[UINib instantiateWithOwner:options:] + 1122 frame #6: 0x30d7de8e UIKit -[UIViewController _loadViewFromNibNamed:bundle:] + 234 frame #7: 0x30bda344 UIKit -[UIViewController loadView] + 92 frame #8: 0x30aba874 UIKit -[UIViewController loadViewIfRequired] + 72 frame #9: 0x30aba7f0 UIKit -[UIViewController view] + 24 frame #10: 0x30bda276 UIKit -[UIWindow handleStatusBarChangeFromHeight:toHeight:] + 694 frame #11: 0x30b41416 UIKit +[UIWindow _noteStatusBarHeightChanged:oldHeight:forAutolayoutRootViewsOnly:] + 238 frame #12: 0x30c41b10 UIKit__79 - [UIApplication _setStatusBarHidden:animationParameters:changeApplicationFlag:]_block_invoke + 132 frame #13: 0x30aeba1a UIKit +[UIWindow _noteStatusBarHeightChanged:oldHeight:forAutolayoutRootViewsOnly:] + 238 frame #12: 0x30c41b10 UIKit__79 - [UIApplication _setStatusBarHidden:animationParameters:changeApplicationFlag:]_block_invoke + 132 frame #13: 0x30aeba1a UIKit +[UIView(UIViewAnimationWithBlocks) _setupAnimationWithDuration:delay:view:options:factory:animations:start:animationStateGenerator:completion:] + 490 frame #14: 0x30c2431e UIKit +[UIView(UIViewAnimationWithBlocks) animateWithDuration:animations:completion:] + 70 frame #15: 0x30b66dca UIKit -[UIApplication _setStatusBarHidden:animationParameters:changeApplicationFlag:] + 462 frame #16: 0x30ac18e0 UIKit -[UIApplication _updateCurrentStatusBarViewControllerAppearance] + 248 frame #17: 0x30abed72 UIKit -[UIWindow _setHidden:forced:] + 234 frame #18: 0x30b28a30 UIKit -[UIWindow makeKeyAndVisible] + 60 frame #19: 0x30b256c4 UIKit -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1820 frame #20: 0x30b1fca8 UIKit -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 720 frame #21: 0x30abbc76 UIKit -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 720 frame #21: 0x30abbc76 UIKit -[UIApplication handleEvent:withNewEvent:] + 3550 frame #22: 0x30abadd8 UIKit -[UIApplication sendEvent:] + 72 frame #23: 0x30b1f3e4 UIKit _UIApplicationHandleEvent + 616 frame #24: 0x33128b54 GraphicsServices _PurpleEventCallback + 608 frame #25: 0x3312873e GraphicsServices PurpleEventCallback + 34 frame #26: 0x2e24f806 CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 34 frame #27: 0x2e24f7a2 CoreFoundation __CFRunLoopDoSource1 + 346 frame #28: 0x2e24df6e CoreFoundation __CFRunLoopRun + 1406 frame #29: 0x2e1b8728 CoreFoundation CFRunLoopRunSpecific + 524 frame #30: 0x2e1b850a CoreFoundation CFRunLoopRunInMode + 106 frame #31: 0x30b1e60a UIKit -[UIApplication _run] + 762 frame #32: 0x30b19870 UIKit UIApplicationMain + 1136 <ul> <li>frame #33: 0x000e5ed8 SpriteKitSimpleGame main(argc=1, argv=0x27d62c34) + 116 at main.m:16

I can't understand why it crashes. What may be the reason?

UPD

I've disabled Exception Breakpoints and got the new strange error:

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key snewRecordLabel.'

The snewRecordLabel is deleted from the Storyboard UILabel, but it probably is the reason of error. How to remove it?

Answer 1

snewRecordLabel的情节提要中有一些连接，如果找到snewRecordLabel，则可以将情节提要打开为简单的textedit并查看xml数据，否则情节提要中必定会缺少链接。