UnaryExpression

Hi, I cannot view contacts of a customer. I get this error:

The provided expression contains a UnaryExpression which is not supported. FieldIdentifier only supports simple member accessors (fields, properties) of an object.
Stack trace:
at Microsoft.AspNetCore.Components.Forms.FieldIdentifier.ParseAccessor[T](Expression`1 accessor, Object& model, String& fieldName) at Microsoft.AspNetCore.Components.Forms.FieldIdentifier.Create[TField](Expression`1 accessor) at DevExpress.Blazor.Internal.DxEditorBase`2.CreateFieldIdentifier() at DevExpress.Blazor.Internal.DxEditorBase`2.get_EditFormFieldIdentifier() at DevExpress.Blazor.Internal.DxEditorBase`2.get_EditFormFieldClass() at DevExpress.Blazor.DxCheckBox`1.get_ActualCssClass() at DevExpress.Blazor.DxCheckBox`1.BuildRenderTree(RenderTreeBuilder __builder) at DevExpress.Blazor.Base.DxComponentBase.BuildRenderTreeCore(RenderTreeBuilder builder) at DevExpress.Blazor.Base.DxDecoratedComponent.BuildRenderTree(RenderTreeBuilder builder) at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder batchBuilder, RenderFragment renderFragment, Exception& renderFragmentException)
Attached you will also find the applog.
Thank you for your support
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