Estou recebendo o erro abaixo quando tentei consultar o dicionário de recursos, meu arquivo app.xaml

<Application x:Class="DesignerPoc.App"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="clr-namespace:DesignerPoc"
         StartupUri="MainWindow.xaml">
<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="pack://application:,,,/Dashboard.Designer.WPF;Connection/Views/test.xaml"/>
          </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
 </Application.Resources>

Erro

An Error occurred while finding the resource dictionary "pack://application:,,,/Dashboard.Designer.WPF;Connection/Views/test.xaml"

consulte a imagem

Como resolver isso.