Generating PDF produces blank document when using async/await about questpdf HOT 2 OPEN

class MyData
{
    public required int Index { get; init; }
    public required DateTime DateTime { get; init; }
    public required byte[] Image { get; init; }
}

public async Task Example()
{
    void GenerateDocumentImagePath(MyData data)
    {
        var document = Document.Create(container =>
        {
            container.Page(page =>
            {
                page.Content().Column(column =>
                {
                    column.Item().Text(data.DateTime.ToString());
                    column.Item().Image(data.Image);
                });
            });
        });

        document.GeneratePdf("c:\\temp\\pdf_" + data.Index + "doc.pdf");
    }
    
    for (int i = 0; i < 10; i++)
    {
        var data = new MyData
        {
            Index = i,
            DateTime = DateTime.Now,
            Image = await MyImageService.GetImageAsync(i)
        };
        
        GenerateDocumentImagePath(i);
    }
}