BarcodeScanner.Mobile: App crashing on try to scan on IOS

Hello guys,

I just wanted to implement the Scanner in my App, but everytime i try to scan the app crash. So i tried it with the sample app and here its not working too.

This is the Exception output.

An error occurred: 'Could not create an native instance of the type 'Firebase.MLKit.Vision.VisionImageMetadata': the native class hasn't been loaded.
It is possible to ignore this condition by setting ObjCRuntime.Class.ThrowOnInitFailure to false.'. Callstack: '  at Foundation.NSObject.InitializeObject (System.Boolean alloced) [0x0002e] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Foundation/NSObject2.cs:312 
  at Foundation.NSObject..ctor (Foundation.NSObjectFlag x) [0x0000d] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Foundation/NSObject2.cs:180 
  at Firebase.MLKit.Vision.VisionImageMetadata..ctor () <0x12288e5c8 + 0x00008> in <8607cf18847b4467a58b3fd7d84f75f1>:0 
  at GoogleVisionBarCodeScanner.UICameraPreview+CaptureVideoDelegate..ctor (GoogleVisionBarCodeScanner.Renderer.CameraViewRenderer renderer) [0x0002f] in C:\Users\Kliem\source\repos\Sample\BarcodeScanner.XF\GoogleVisionBarCodeScanner\iOS\UICameraPreview.cs:288 
  at GoogleVisionBarCodeScanner.UICameraPreview.Initialize (GoogleVisionBarCodeScanner.Renderer.CameraViewRenderer renderer) [0x000cb] in C:\Users\Kliem\source\repos\Sample\BarcodeScanner.XF\GoogleVisionBarCodeScanner\iOS\UICameraPreview.cs:182 
  at GoogleVisionBarCodeScanner.UICameraPreview..ctor (GoogleVisionBarCodeScanner.Renderer.CameraViewRenderer renderer, GoogleVisionBarCodeScanner.CameraFacing cameraFacing, GoogleVisionBarCodeScanner.CaptureQuality captureQuality) [0x00016] in C:\Users\Kliem\source\repos\Sample\BarcodeScanner.XF\GoogleVisionBarCodeScanner\iOS\UICameraPreview.cs:35 
  at GoogleVisionBarCodeScanner.Renderer.CameraViewRenderer.OnElementChanged (Xamarin.Forms.Platform.iOS.ElementChangedEventArgs`1[TElement] e) [0x0006b] in C:\Users\Kliem\source\repos\Sample\BarcodeScanner.XF\GoogleVisionBarCodeScanner\iOS\Renderer\CameraViewRenderer.cs:32 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].SetElement (TElement element) [0x00172] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:296 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:158 
  at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00032] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Platform.cs:240 
  at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x0003e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:119 
  at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:51 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].SetElement (TElement element) [0x0012e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:283 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:158 
  at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00032] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Platform.cs:240 
  at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x0003e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:119 
  at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:51 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].SetElement (TElement element) [0x0012e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:283 
  at Xamarin.Forms.Platform.iOS.VisualElementRenderer`1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:158 
  at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00032] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Platform.cs:240 
  at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x0003e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:119 
  at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in D:\a\1\s\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:51 
  at Xamarin.Forms.Platform.iOS.PageRenderer.ViewDidLoad () [0x0008f] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\PageRenderer.cs:251 
  at (wrapper managed-to-native) ObjCRuntime.Messaging.IntPtr_objc_msgSendSuper(intptr,intptr)
  at UIKit.UIViewController.get_View () [0x0002a] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/build/ios/native/UIKit/UIViewController.g.cs:2844 
  at Xamarin.Forms.Platform.iOS.PageRenderer.get_NativeView () [0x00000] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\PageRenderer.cs:103 
  at Xamarin.Forms.Platform.iOS.PageRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x0003d] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\PageRenderer.cs:119 
  at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00032] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Platform.cs:240 
  at Xamarin.Forms.Platform.iOS.NavigationRenderer.CreateViewControllerForPage (Xamarin.Forms.Page page) [0x00008] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\NavigationRenderer.cs:374 
  at Xamarin.Forms.Platform.iOS.NavigationRenderer.OnPushAsync (Xamarin.Forms.Page page, System.Boolean animated) [0x0001d] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\NavigationRenderer.cs:352 
  at Xamarin.Forms.Platform.iOS.NavigationRenderer.<ViewDidLoad>b__47_0 (Xamarin.Forms.Page p) [0x00024] in D:\a\1\s\Xamarin.Forms.Platform.iOS\Renderers\NavigationRenderer.cs:239 
  at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__7_0 (System.Object state) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1021 
  at (wrapper delegate-invoke) <Module>.invoke_void_object(object)
  at Foundation.NSAsyncSynchronizationContextDispatcher.Apply () [0x00000] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Foundation/NSAction.cs:178 
--- End of stack trace from previous location where exception was thrown ---

  at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr)
  at UIKit.UIApplication.Main (System.String[] args, System.Type principalClass, System.Type delegateClass) [0x00047] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:79 
  at SampleApp.iOS.Application.Main (System.String[] args) [0x00001] in C:\Users\Kliem\source\repos\Sample\BarcodeScanner.XF\SampleApp\SampleApp.iOS\Main.cs:17 
  at (wrapper managed-to-native) System.Reflection.RuntimeMethodInfo.InternalInvoke(System.Reflection.RuntimeMethodInfo,object,object[],System.Exception&)
  at System.Reflection.RuntimeMethodInfo.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x0006a] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:395 '

I figured out that when i am builduing the app, this output is shown:

Skipping invalid framework FirebaseCore.framework. Reason: Invalid executable obj\iPhone\Debug\device-builds\iphone9.3-15.1/Frameworks\FirebaseCore.framework\FirebaseCore (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseCoreDiagnostics.framework. Reason: Invalid executable obj\iPhone\Debug\device-builds\iphone9.3-15.1/Frameworks\FirebaseCoreDiagnostics.framework\FirebaseCoreDiagnostics (Aufgaben-ID: 80)
2>  Skipping invalid framework GoogleDataTransport.framework. Reason: Invalid executable obj\iPhone\Debug\device-builds\iphone9.3-15.1/Frameworks\GoogleDataTransport.framework\GoogleDataTransport (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseInstallations.framework. Reason: Invalid executable obj\iPhone\Debug\device-builds\iphone9.3-15.1/Frameworks\FirebaseInstallations.framework\FirebaseInstallations (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseInstanceID.framework. Reason: Invalid executable obj\iPhone\Debug\device-builds\iphone9.3-15.1/Frameworks\FirebaseInstanceID.framework\FirebaseInstanceID (Aufgaben-ID: 80)
2>  Skipping invalid framework TFLTensorFlowLite.framework. Reason: Invalid executable obj\iPhone\Debug\device-builds\iphone9.3-15.1/Frameworks\TFLTensorFlowLite.framework\TFLTensorFlowLite (Aufgaben-ID: 80)
2>  Skipping invalid framework GoogleAppMeasurement.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\GAppM-6.9.0\Frameworks\GoogleAppMeasurement.framework\GoogleAppMeasurement (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLCommon.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLCmmn-0.21.0\Frameworks\FirebaseMLCommon.framework\FirebaseMLCommon (Aufgaben-ID: 80)
2>  Skipping invalid framework TensorFlowLiteC.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\TnsrFlwLtC-2.3.0\TensorFlowLiteC-2.3.0\Frameworks\TensorFlowLiteC.framework\TensorFlowLiteC (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLVision.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLVsn-0.21.0\Frameworks\FirebaseMLVision.framework\FirebaseMLVision (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLVisionAutoML.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLVsnA-0.21.0\Frameworks\FirebaseMLVisionAutoML.framework\FirebaseMLVisionAutoML (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLVisionBarcodeModel.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLVsnB-0.21.0\Frameworks\FirebaseMLVisionBarcodeModel.framework\FirebaseMLVisionBarcodeModel (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLVisionFaceModel.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLVsnF-0.21.0\Frameworks\FirebaseMLVisionFaceModel.framework\FirebaseMLVisionFaceModel (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLVisionLabelModel.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLVsnL-0.21.0\Frameworks\FirebaseMLVisionLabelModel.framework\FirebaseMLVisionLabelModel (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLVisionTextModel.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLVsnT-0.21.0\Frameworks\FirebaseMLVisionTextModel.framework\FirebaseMLVisionTextModel (Aufgaben-ID: 80)
2>  Skipping invalid framework FirebaseMLVisionObjectDetection.framework. Reason: Invalid executable C:\Users\Kliem\AppData\Local\XamarinBuildDownloadCache\FMLVsnO-0.21.0\Frameworks\FirebaseMLVisionObjectDetection.framework\FirebaseMLVisionObjectDetection (Aufgaben-ID: 80)
2>  

Can someone help me?