Cant compile app after adding NavigationView

[americoperez49]

Hi eveyone!
I'm just getting started with building Desktop apps, so forgive me if I'm ignorant with some things.

I followed all the steps outlined Here to install Project reunion.

I then tried to add a NavigationView with the following code and the application wont compile. It just throws an exception: Could I get some help with this please?

MainWindow.xaml

<Window
    x:Class="Db_Manager.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:Db_Manager"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition />
        </Grid.RowDefinitions>
        <NavigationView x:Name="NavView" 
                    Grid.Row="0"
                    >



            <Frame x:Name="NavFrame" />
        </NavigationView>
    </Grid>
</Window>

MainWindow.xaml.cs

using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Controls.Primitives;
using Microsoft.UI.Xaml.Data;
using Microsoft.UI.Xaml.Input;
using Microsoft.UI.Xaml.Media;
using Microsoft.UI.Xaml.Navigation;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;

// To learn more about WinUI, the WinUI project structure,
// and more about our project templates, see: http://aka.ms/winui-project-info.

namespace Db_Manager
{
    /// <summary>
    /// An empty window that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.InitializeComponent();
        }
    }
}

here is the output I get:

'Db_Manager.exe' (CoreCLR: DefaultDomain): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.4\System.Private.CoreLib.dll'. 
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Users\Americo\Source\Repos\Db_Manager\Db_Manager\bin\x64\Debug\net5.0-windows10.0.19041.0\Db_Manager.dll'. Symbols loaded.
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.4\System.Runtime.dll'. 
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Users\Americo\Source\Repos\Db_Manager\Db_Manager\bin\x64\Debug\net5.0-windows10.0.19041.0\WinRT.Runtime.dll'. 
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.4\System.Runtime.InteropServices.dll'. 
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.4\System.Collections.dll'. 
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.4\System.Threading.dll'. 
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Users\Americo\Source\Repos\Db_Manager\Db_Manager\bin\x64\Debug\net5.0-windows10.0.19041.0\Microsoft.WinUI.dll'. 
'Db_Manager.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\5.0.4\System.Collections.Concurrent.dll'. 
Exception thrown: 'System.DllNotFoundException' in System.Private.CoreLib.dll
Exception thrown: 'System.Runtime.InteropServices.COMException' in System.Private.CoreLib.dll
Exception thrown: 'System.DllNotFoundException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.FileNotFoundException' in System.Private.CoreLib.dll
Exception thrown: 'System.DllNotFoundException' in System.Private.CoreLib.dll
Exception thrown: 'System.IO.FileNotFoundException' in System.Private.CoreLib.dll
Exception thrown: 'System.Runtime.InteropServices.COMException' in System.Private.CoreLib.dll
Exception thrown: 'System.Reflection.TargetInvocationException' in System.Private.CoreLib.dll
An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in System.Private.CoreLib.dll
Exception has been thrown by the target of an invocation.

[americoperez49]

Disregard this. I'm having deeper issues where I cant even build a blank application now.