How to fix this issue - Failed to marshal the Objective-C object 0x1257d5880

Bhuwan 881 Reputation points
2025-06-13T06:43:10.1933333+00:00

I am facing an issue on an iOS device. After installing the app and opening it, I encounter this error.

Failed to marshal the Objective-C object 0x1257d5880 (type: Microsoft_Maui_Controls_Handlers_Items_VerticalCell). Could not find an existing managed instance for this object, nor was it possible to create a new managed instance (because the type 'Microsoft.Maui.Controls.Handlers.Items.VerticalCell' does not have a constructor that takes one NativeHandle argument).

at ObjCRuntime.Runtime.MissingCtor(IntPtr ptr, IntPtr klass, Type type, MissingCtorResolution resolution, IntPtr sel, RuntimeMethodHandle method_handle) in /Users/builder/azdo/_work/1/s/macios/src/ObjCRuntime/Runtime.cs:line 1419 at ObjCRuntime.Runtime.ConstructNSObjectUIView in /Users/builder/azdo/_work/1/s/macios/src/ObjCRuntime/Runtime.cs:line 1550 at ObjCRuntime.Runtime.GetNSObjectUIView in /Users/builder/azdo/_work/1/s/macios/src/ObjCRuntime/Runtime.cs:line 1949 at ObjCRuntime.Runtime.GetNSObjectUIView in /Users/builder/azdo/_work/1/s/macios/src/ObjCRuntime/Runtime.cs:line 1911 at ObjCRuntime.Runtime.GetNSObjectUIView in /Users/builder/azdo/_work/1/s/macios/src/ObjCRuntime/Runtime.cs:line 1906 at ObjCRuntime.Runtime.GetNSObjectUIView in /Users/builder/azdo/_work/1/s/macios/src/ObjCRuntime/Runtime.cs:line 1965 at UIKit.UIView.get_Superview() in /Users/builder/azdo/_work/1/s/macios/src/build/dotnet/ios/generated-sources/UIKit/UIView.g.cs:line 4883 at Microsoft.Maui.Platform.ViewExtensions.InvalidateAncestorsMeasures(UIView child) at Microsoft.Maui.Platform.ViewExtensions.InvalidateMeasure(UIView platformView) at Microsoft.Maui.Platform.ViewExtensions.InvalidateMeasure(UIView platformView, IView view) at Microsoft.Maui.Handlers.ViewHandler.MapInvalidateMeasure(IViewHandler handler, IView view, Object args) at Microsoft.Maui.CommandMapper2.<>c__DisplayClass6_0[[Microsoft.Maui.IView, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.IViewHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IElementHandler h, IElement v, Object o) at Microsoft.Maui.CommandMapper.InvokeCore(String key, IElementHandler viewHandler, IElement virtualView, Object args) at Microsoft.Maui.CommandMapper.Invoke(IElementHandler viewHandler, IElement virtualView, String property, Object args) at Microsoft.Maui.Handlers.ElementHandler.Invoke(String command, Object args) at Microsoft.Maui.Controls.VisualElement.InvalidateMeasureOverride() at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IView.InvalidateMeasure() at Microsoft.Maui.Controls.VisualElement.InvalidateMeasureInternal(InvalidationTrigger trigger) at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.Controls.IVisualElementController.InvalidateMeasure(InvalidationTrigger trigger) at FFImageLoading.Maui.Platform.CachedImageHandler.<>c__DisplayClass15_0.<ImageLoadingSizeChanged>b__0() at Microsoft.Maui.Dispatching.DispatcherExtensions.<>c__DisplayClass1_0.<DispatchAsync>b__0() at Microsoft.Maui.Dispatching.DispatcherExtensions.<>c__DisplayClass0_01[[System.Boolean, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].<DispatchAsync>b__0() --- End of stack trace from previous ___location --- at FFImageLoading.Maui.Platform.CachedImageHandler.ImageLoadingSizeChanged(CachedImage element, Boolean isLoading) at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state) at Foundation.NSAsyncSynchronizationContextDispatcher.Apply() in /Users/builder/azdo/_work/1/s/macios/src/Foundation/NSAction.cs:line 179

.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
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  1. دعاء علي حمدان الجروانية 80 Reputation points
    2025-06-14T15:57:22.7033333+00:00

    Issue:

    The error means iOS can’t create a managed .NET object for a native VerticalCell, because the type Microsoft.Maui.Controls.Handlers.Items.VerticalCell has no constructor that accepts a native handle.

    Fix:

    This is likely a MAUI bug or unsupported custom control. Try:

    1. Update all MAUI packages to the latest stable version.
    2. Avoid using custom cells or handlers unless they support iOS.
    3. Temporarily replace VerticalCell with standard controls like CollectionView or ListView for testing.
    1 person found this answer helpful.

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