Command does not hit

I have this chunk of code

   <sfPopup:SfPopup
       x:Name="UserProfilePopup"
       AbsoluteY="20"
       AcceptButtonText="Save and close"
       AcceptCommand="{Binding SavePopUpContentCommand}"
       HeaderHeight="90"
       HeightRequest="400"
       RelativePosition="AlignTopRight"
       RelativeView="{x:Reference UserProfileImage}"
       ShowFooter="True"
       ShowHeader="True"
       ShowOverlayAlways="False"
       WidthRequest="400">
       <sfPopup:SfPopup.HeaderTemplate>
           <DataTemplate x:DataType="model:LocalUser">
               <toolkit:AvatarView
                   Margin="20,10,0,0"
                   BorderColor="Black"
                   BorderWidth="1"
                   CornerRadius="80"
                   FontFamily="MaterialSymbol"
                   FontSize="20"
                   HeightRequest="80"
                   HorizontalOptions="Start"
                   ImageSource="{Binding ImagePath}"
                   Text="{Static icons:MateriallFontGlyphs.Add_a_photo}"
                   TextColor="Black"
                   WidthRequest="80">
                   <toolkit:AvatarView.GestureRecognizers>
                       <PointerGestureRecognizer
                           x:Name="AvatarImage"
                           x:DataType="vm:AppShellViewModel"
                           PointerEntered="AvatarImage_PointerEntered"
                           PointerExited="AvatarImage_PointerExited" />
                   </toolkit:AvatarView.GestureRecognizers>
                   <toolkit:AvatarView.Behaviors>
                       <toolkit:EventToCommandBehavior
                           x:DataType="vm:AppShellViewModel"
                           Command="{Binding AvatarImageClickedCommand}" />
                   </toolkit:AvatarView.Behaviors>
               </toolkit:AvatarView>
           </DataTemplate>
       </sfPopup:SfPopup.HeaderTemplate>
       <sfPopup:SfPopup.PopupStyle>
           <sfPopup:PopupStyle CornerRadius="0" />
       </sfPopup:SfPopup.PopupStyle>
       <sfPopup:SfPopup.ContentTemplate>
           <DataTemplate x:DataType="model:LocalUser">
               <Grid
                   Padding="20"
                   HorizontalOptions="Center"
                   RowDefinitions="80,80"
                   RowSpacing="5"
                   VerticalOptions="Center">
                   <controls:MaterialEntry
                       Hint="Name"
                       HintColor="Black"
                       HorizontalOptions="Start"
                       ShowIcon="False"
                       Text="{Binding Username}"
                       TextColor="Black" />
                   <controls:MaterialEntry
                       Grid.Row="1"
                       Hint="Status"
                       HintColor="Black"
                       HorizontalOptions="Start"
                       ShowIcon="False"
                       Text="{Binding StatusMessage}"
                       TextColor="Black" />
               </Grid>
           </DataTemplate>
       </sfPopup:SfPopup.ContentTemplate>

I made my viewModel

namespace FireChat.ViewModels;

public partial class AppShellViewModel : BaseViewModel {

    readonly FirebaseAuthClient _authClient;
    readonly WeakReferenceMessenger _messenger;
    readonly IMediaPicker _mediaPicker;

    [ObservableProperty]
    LocalUser localUser = new();

    [ObservableProperty]
    string? _userName;

    public AppShellViewModel(FirebaseAuthClient authClient, WeakReferenceMessenger messenger, IMediaPicker mediaPicker) {

        _authClient = authClient;

        if(_authClient.User != null) {
            _userName = _authClient.User.Info.DisplayName;
        }

        _messenger = messenger;
        _mediaPicker = mediaPicker;
    }

    [RelayCommand]
    async Task SignOut() {

        _authClient.SignOut();

        await Shell.Current.GoToAsync("..");
    }

    [RelayCommand]
    void OpenProfile() {

        _messenger.Send("OpenProfile");

    }

    [RelayCommand]
    void SavePopUpContent() {

        _messenger.Send("SavePopUpContent");
    }

    [RelayCommand]
    async Task AvatarImageClicked() {

        await Shell.Current.DisplayActionSheet("Choose an option", "Cancel", null, "Take a photo", "Choose from gallery");
        var result = await _mediaPicker.PickPhotoAsync(new MediaPickerOptions {
            Title = "Pick a photo"
        });
        if(result != null) {
            var stream = await result.OpenReadAsync();
            LocalUser.ImagePath = stream.ToString();
        }
    }
}

and it does not want to hit the command, to show me the propt

code

https://github.com/eduardoagr/MauiSamples