Error while Launching saying NSInternalInconsistencyException - xamarin

Question

Need help. receiving below error while launching the application
Objective-C exception thrown. Name: NSInternalInconsistencyException Reason: Application windows are expected to have a root view controller at the end of application launch
Native stack trace:
0 CoreFoundation 0x00000001160421e6 exceptionPreprocess + 294
1 libobjc.A.dylib 0x0000000116fdf031 objc_exception_throw + 48
2 CoreFoundation 0x0000000116047472 +[NSException raise:format:arguments:] + 98
3 Foundation 0x0000000114f7b652 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 193
4 UIKit 0x0000000112d1bb96 -[UIApplication _runWithMainScene:transitionContext:completion:] + 3064
5 UIKit 0x00000001130dde4a __111-[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:]_block_invoke + 866
6 UIKit 0x00000001134b0909 +[_UICanvas _enqueuePostSettingUpdateTransactionBlock:] + 153
7 UIKit 0x00000001130dda86 -[__UICanvasLifecycleMonitor_Compatability _scheduleFirstCommitForScene:transition:firstActivation:completion:] + 236
8 UIKit 0x00000001130de2a7 -[__UICanvasLifecycleMonitor_Compatability activateEventsOnly:withContext:completion:] + 675
9 UIKit 0x0000000113a4f4d4 __82-[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:]_block_invoke + 299
10 UIKit 0x0000000113a4f36e -[_UIApplicationCanvas _transitionLifecycleStateWithTransitionContext:completion:] + 433
11 UIKit 0x000000011373362d __125-[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:]_block_invoke + 221
12 UIKit 0x000000011392e387 _performActionsWithDelayForTransitionContext + 100
13 UIKit 0x00000001137334f7 -[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:] + 223
14 UIKit 0x00000001134affb0 -[_UICanvas scene:didUpdateWithDiff:transitionContext:completion:] + 392
15 UIKit 0x0000000112d19f0c -[UIApplication workspace:didCreateScene:withTransitionContext:completion:] + 515
16 UIKit 0x00000001132eca97 -[UIApplicationSceneClientAgent scene:didInitializeWithEvent:completion:] + 361
17 FrontBoardServices 0x000000011d9c32f3 -[FBSSceneImpl _didCreateWithTransitionContext:completion:] + 331
18 FrontBoardServices 0x000000011d9cbcfa __56-[FBSWorkspace client:handleCreateScene:withCompletion:]_block_invoke_2 + 225
19 libdispatch.dylib 0x0000000117c74779 _dispatch_client_callout + 8
20 libdispatch.dylib 0x0000000117c79931 _dispatch_block_invoke_direct + 317
21 FrontBoardServices 0x000000011d9f7470 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK + 24
22 FrontBoardServices 0x000000011d9f712e -[FBSSerialQueue _performNext] + 439
23 FrontBoardServices 0x000000011d9f768e -[FBSSerialQueue _performNextFromRunLoopSource] + 45
24 CoreFoundation 0x0000000115fe4bb1 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17
25 CoreFoundation 0x0000000115fc94af __CFRunLoopDoSources0 + 271
26 CoreFoundation 0x0000000115fc8a6f __CFRunLoopRun + 1263
27 CoreFoundation 0x0000000115fc830b CFRunLoopRunSpecific + 635
28 GraphicsServices 0x0000000119779a73 GSEventRunModal + 62
29 UIKit 0x0000000112d1d0b7 UIApplicationMain + 159
30 ??? 0x000000013437347e 0x0 + 5171000446
31 ??? 0x0000000134373213 0x0 + 5170999827

Answer 1

Application windows are expected to have a root view controller at the end of application
It seems that you didn't set the RootViewController.It worked fine in old version.But in the new version ,you should set it in AppDelegate
public override bool FinishedLaunching (UIApplication application, NSDictionary launchOptions)
{
// Override point for customization after application launch.
// If not required for your application you can safely delete this method
var indexVC = new XXXViewController ();//your viewcontroller
Window = new UIWindow ((CGRect)UIScreen.MainScreen.Bounds);
Window .RootViewController = indexVC;
Window .MakeKeyAndVisible ();
return true;
}