I have added a RefreshView for a CollectionView. After adding RefreshView, the CollectionView contents are not visible on the UI. The CollectionView contents are visible on the UI before adding RefreshView. Below is the code:

<RefreshView 
    IsRefreshing="{Binding IsRefreshing}"
    Command="{Binding RefreshCommand}">

    <CollectionView 
        x:Name="MyTweetsList" 
        ItemsSource="{Binding AllItems,Mode=TwoWay}"
        RemainingItemsThreshold="0"
        RemainingItemsThresholdReached="LoadMoreTweets"
        HorizontalOptions="Fill">
        <CollectionView.ItemTemplate>
            <DataTemplate>
                <StackLayout
                    HorizontalOptions="Fill"
                    VerticalOptions="FillAndExpand"
                    Orientation="Vertical">
                
                </StackLayout>
            </DataTemplate>
        </CollectionView.ItemTemplate>
    </CollectionView>
</RefreshView>

public ICommand RefreshCommand
{
    get
    {
        return new Command(async () =>
        {
            IsRefreshing = true;
            
            LoadData();
            
            IsRefreshing = false;
        });
    }
}


private bool _isRefreshing = false;
public bool IsRefreshing
{
    get { return _isRefreshing; }
    set
    {
        _isRefreshing = value;
        OnPropertyChanged(nameof(IsRefreshing));
    }
}

Do I need to add anything else to view the data on UI when adding RefreshView?