Fatal Exception: NSInternalInconsistencyException 0 CoreFoundation 0x1a0b40300 __exceptionPreprocess 1 libobjc.A.dylib 0x1a0854c1c objc_exception_throw 2 CoreFoundation 0x1a0a3d1f8 +[_CFXNotificationTokenRegistration keyCallbacks] 3 Foundation 0x1a0e81998 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] 4 UIKitCore 0x1a4e8ae64 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] 5 UIKitCore 0x1a4e57cc8 -[UITableView _updateVisibleCellsNow:] 6 UIKitCore 0x1a4e74fe0 -[UITableView layoutSubviews] 7 UIKitCore 0x1a515b284 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] 8 QuartzCore 0x1a77aa718 -[CALayer layoutSublayers] 9 QuartzCore 0x1a77aab58 CA::Layer::layout_if_needed(CA::Transaction*) 10 QuartzCore 0x1a77bd03c CA::Layer::layout_and_display_if_needed(CA::Transaction*) 11 QuartzCore 0x1a770195c CA::Context::commit_transaction(CA::Transaction*, double) 12 QuartzCore 0x1a772c4bc CA::Transaction::commit() 13 QuartzCore 0x1a772d0b4 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) 14 CoreFoundation 0x1a0abaee8 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ 15 CoreFoundation 0x1a0ab5b78 __CFRunLoopDoObservers 16 CoreFoundation 0x1a0ab6018 __CFRunLoopRun 17 CoreFoundation 0x1a0ab58f4 CFRunLoopRunSpecific 18 GraphicsServices 0x1aaecc604 GSEventRunModal 19 UIKitCore 0x1a4c89358 UIApplicationMain 20 Maytag 0x102438c98 main + 16 (AdrsStepperView.swift:16) 21 libdyld.dylib 0x1a09312dc start Getting this log on crash, not able to figure out what is going wrong over here.