Message in Spanish (Español)
El atributo '<var>X</var>' no existe en el espacio de nombres XML 'http://schemas.microsoft.com/winfx/2006/xaml/presentation/options'.
Unlocalized message
'<var>X</var>' attribute does not exist in XML namespace 'http://schemas.microsoft.com/winfx/2006/xaml/presentation/options'.
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